Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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{"common":{"save":0,"post_id":"4788","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8124","post_id":"4788","mon_id":"1158113","chapter_id":"1158119","question":"<p>So sánh (\u0111i\u1ec1n d\u1ea5u > , < , = )<\/p><p><span class=\"math-tex\">$\\dfrac{7}{12}$<\/span> c\u1ee7a 24 <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> <span class=\"math-tex\">$\\dfrac{7}{6}$<\/span> c\u1ee7a 12<\/p>","options":"","correct":["[\"=\"]"],"level":"2","hint":"<p>Mu\u1ed1n tìm <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a s\u1ed1 a ta tính <span class=\"math-tex\">$a . \\dfrac{m}{n}$<\/span> .<\/p>","answer":"<p><span class=\"math-tex\">$\\dfrac{7}{12}$<\/span> c\u1ee7a 24 là <span class=\"math-tex\">$\\dfrac{7}{12}$<\/span> . 24 = 14<\/p><p><span class=\"math-tex\">$\\dfrac{7}{6}$<\/span> c\u1ee7a 12 là <span class=\"math-tex\">$\\dfrac{7}{6}$<\/span> . 12 = 14<\/p><p>Suy ra <span class=\"math-tex\">$\\dfrac{7}{12}$<\/span> c\u1ee7a 24 <span style=\"color:#16a085;\">=<\/span> <span class=\"math-tex\">$\\dfrac{7}{6}$<\/span> c\u1ee7a 12 (vì 14 = 14)<\/p><p>D\u1ea5u c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>= <\/strong><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2021-10-03 03:37:07"},{"id":"8126","post_id":"4788","mon_id":"1158113","chapter_id":"1158119","question":"<p>So sánh M v\u1edbi 1 bi\u1ebft <\/p><p><span class=\"math-tex\">$\\dfrac{7}{9}$<\/span> c\u1ee7a M b\u1eb1ng <span class=\"math-tex\">$\\dfrac{14}{3}$<\/span><\/p>","options":["M > 1","M < 1","M = 1"],"correct":"1","level":"2","hint":"<p>Mu\u1ed1n tìm m\u1ed9t s\u1ed1 khi bi\u1ebft <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a s\u1ed1 \u0111ó là a, ta tính a : <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span><\/p>","answer":"<p><span class=\"math-tex\">$\\dfrac{7}{9}$<\/span> c\u1ee7a M b\u1eb1ng <span class=\"math-tex\">$\\dfrac{14}{3}$<\/span> nên M = <span class=\"math-tex\">$\\dfrac{14}{3}$<\/span> <strong>:<\/strong> <span class=\"math-tex\">$\\dfrac{7}{9}$<\/span> = <span class=\"math-tex\">$\\dfrac{14}{3}$<\/span> . <span class=\"math-tex\">$\\dfrac{9}{7}$<\/span> = 6 > 1<\/p><p>V\u1eady M > 1<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong> M > 1<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-03 03:41:19","option_type":"txt","len":0},{"id":"8128","post_id":"4788","mon_id":"1158113","chapter_id":"1158119","question":"<p>Tìm m\u1ed9t s\u1ed1 bi\u1ebft <span class=\"math-tex\">$2\\dfrac{1}{2}$<\/span> c\u1ee7a s\u1ed1 \u0111ó b\u1eb1ng 75<\/p>","options":["30","-30","40","-40"],"correct":"1","level":"2","hint":"<p>Mu\u1ed1n tìm m\u1ed9t s\u1ed1 khi bi\u1ebft <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a s\u1ed1 \u0111ó là a, ta tính a : <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span><\/p>","answer":"<p>Ta có <span class=\"math-tex\">$2\\dfrac{1}{2}=\\dfrac{5}{2}$<\/span><\/p><p>Vì <span class=\"math-tex\">$2\\dfrac{1}{2}$<\/span> c\u1ee7a s\u1ed1 \u0111ó b\u1eb1ng 75 nên s\u1ed1 \u0111ó là 75 : <span class=\"math-tex\">$\\dfrac{5}{2}$<\/span> = 75 . <span class=\"math-tex\">$\\dfrac{2}{5}$<\/span> = 30<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>30<\/strong><\/span><\/p>","type":"choose","extra_type":"flower","time":"0","user_id":"131","test":"1","date":"2021-10-03 03:44:03","option_type":"txt","len":0}]}