15 bài toán tìm tập hợp ước chung

Dạng toán tìm tập hợp ước chung

Bài 1: Tìm các tập hợp sau:

a, UCLN (12;30) b, UCLN (8;9) c, UCLN (8;12;15) d,UCLN (24;16;8 )

Bài 2: Tìm các tập hợp sau:

a, UCLN (56;140) b, UCLN (24;84;180) c, UCLN (60;180) d,UCLN (15;19)

Bài 3: Tìm các tập hợp sau:

a, UCLN (16;80;176) b, UCLN (18;30;77) c, UCLN (180;234) d, UCLN (60;90;135)

Bài 4: Tìm các tập hợp sau:

a, UC(8;12) b, UC(40;60) c, UC(28;39;25) d, UC(36;60;72)

Bài 5: Tìm số tự nhiên a lớn nhất sao cho 420 $\vdots$

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a và 700 $\vdots$

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a

Bài 6: Tìm các ước lớn hơn 20 của 144 và 192

Bài 7: Tìm số tự nhiên x biết rằng 112 $\vdots$

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x , 140 $\vdots$

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x và 10<x<20

Bài 8: Tìm số tự nhiên a lớn nhất biết rằng 480 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

a và 600 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

a

Bài 9: Tìm số tự nhiên x biết rằng 126 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

x và 210 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

x và 15<x<30

Bài 10: Tìm các ước chung của 108 và 180 mà lớn hơn 15

Bài 11: Tìm các tập hợp sau:

a, UC(60;88) b, UC(150;168;210) c, UC(10;20;70) d,UC(5661;5291;4292)

Bài 12: Tìm các tập hợp sau:

a,UC(12;48) b, UC(24;36) c, UC(72;36;180) d, UC(36;80;156)

Bài 13: Tìm các tập hợp sau:

a, UC(28;77;45) b, UC(36;60;72) c, UC(360;600;840) d, UC(108;162)

Bài 14: Tìm số tự nhiên a biết rằng 720 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

a và 540 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

a và 70<a<100

Bài 15: Tìm số tự nhiên b biết rằng 120 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

b, 300 $\vdots$

<img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" data-src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="pb-seo-lazy ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;"><noscript><img decoding="async" src="http://abcdonline.vn/wp-content/ql-cache/quicklatex.com-072a6eba2cde371eb2be2123067bc11b_l3.png" class="ql-img-inline-formula quicklatex-auto-format" alt="\vdots" title="Rendered by QuickLaTeX.com" height="15" width="3" style="vertical-align: 0px;">

b và b>20 Số học 6 - Tags: toán 6, ước chung, ước chung lớn nhất