{"common":{"save":0,"post_id":"4904","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8915","post_id":"4904","mon_id":"1158113","chapter_id":"1158138","question":"<p>Bi\u1ebft \u01afCLN(x , y) = 12 v&agrave; BCNN(x , y) = 72.<\/p><p>T&igrave;m t&iacute;ch x . y = ?<\/p>","options":["x . y = 866","x . y = 846","x . y = 864"],"correct":"3","level":"3","hint":"<p>\u01afCLN(a, b)<strong> .<\/strong> BCNN(a, b) = a . b<\/p><p>(t&iacute;ch c\u1ee7a \u01b0\u1edbc chung l\u1edbn nh\u1ea5t v&agrave; b\u1ed9i chung nh\u1ecf nh\u1ea5t c\u1ee7a hai s\u1ed1 a v&agrave; b b\u1eb1ng t&iacute;ch c\u1ee7a a v&agrave; b)<\/p>","answer":"<p>Ta c&oacute;:<\/p><p>x . y =&nbsp;\u01afCLN(x , y) . BCNN(x , y) = 12 . 72 = 864<\/p><p>V\u1eady \u0111&aacute;p &aacute;n \u0111&uacute;ng l&agrave; <span style=\"color:#16a085;\"><strong>x . y = 864<\/strong><\/span><\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"132","test":"1","date":"2021-10-10 03:01:29","option_type":"txt","len":0},{"id":"9038","post_id":"4904","mon_id":"1158113","chapter_id":"1158138","question":"<p>T&igrave;m BCNN&nbsp;c\u1ee7a hai s\u1ed1 m, n bi\u1ebft:&nbsp;<\/p><p>m = 3<span class=\"math-tex\">$^2$<\/span>&nbsp;. 5 . 13<span class=\"math-tex\">$^2$<\/span>&nbsp; v&agrave;&nbsp;&nbsp;n = 2 . 3 . 17<span class=\"math-tex\">$^3$<\/span><\/p>","options":["2 . 3<span class=\"math-tex\">$^2$<\/span> . 5 . 13<span class=\"math-tex\">$^2$<\/span> ","3<span class=\"math-tex\">$^2$<\/span> . 5 . 13<span class=\"math-tex\">$^2$<\/span> . 17<span class=\"math-tex\">$^3$<\/span> ","2 . 3<span class=\"math-tex\">$^2$<\/span> . 5 . 13<span class=\"math-tex\">$^2$<\/span> . 17<span class=\"math-tex\">$^3$<\/span> "],"correct":"3","level":"3","hint":"","answer":"<p>m = 3<span class=\"math-tex\">$^2$<\/span>&nbsp;. 5 . 13<span class=\"math-tex\">$^2$<\/span>&nbsp; v&agrave;&nbsp;&nbsp;n = 2 . 3 . 17<span class=\"math-tex\">$^3$<\/span><\/p><p>Suy ra&nbsp;BCNN(m , n) = 2 . 3<span class=\"math-tex\">$^2$<\/span>&nbsp;. 5 . 13<span class=\"math-tex\">$^2$<\/span>&nbsp;.&nbsp;17<span class=\"math-tex\">$^3$<\/span>&nbsp;<\/p><p>V\u1eady \u0111&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp;<span style=\"color:#16a085;\"><strong>&nbsp;2 . 3<span class=\"math-tex\">$^2$<\/span>&nbsp;. 5 . 13<span class=\"math-tex\">$^2$<\/span>&nbsp;.&nbsp;17<span class=\"math-tex\">$^3$<\/span>&nbsp;<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"1","date":"2021-10-10 10:51:01","option_type":"math","len":0},{"id":"9043","post_id":"4904","mon_id":"1158113","chapter_id":"1158138","question":"<p>T&igrave;m s\u1ed1 t\u1ef1 nhi&ecirc;n a nh\u1ecf nh\u1ea5t kh&aacute;c 0 bi\u1ebft r\u1eb1ng&nbsp;a \u22ee 26 v&agrave;&nbsp;a \u22ee 34&nbsp;<\/p>","options":["442","424","244"],"correct":"1","level":"3","hint":"","answer":"<p>V&igrave; a nh\u1ecf nh\u1ea5t kh&aacute;c 0 ,&nbsp;a \u22ee 26 v&agrave;&nbsp;a \u22ee 34 n&ecirc;n a = BCNN(26 , 34)<\/p><p>Ta c&oacute;: 26 = 2 . 13&nbsp; ;&nbsp; 34 = 2 . 17<\/p><p>Suy ra BCNN(26 , 34) = 2 . 13 . 17 = 442<\/p><p>V\u1eady \u0111&aacute;p &aacute;n \u0111&uacute;ng l&agrave;&nbsp; <span style=\"color:#16a085;\"><strong>442<\/strong><\/span><\/p>","type":"choose","extra_type":"star","time":"0","user_id":"132","test":"1","date":"2021-10-10 10:54:46","option_type":"txt","len":0}]}