Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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{"common":{"save":0,"post_id":"7561","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1150","post_id":"7561","mon_id":"1159414","chapter_id":"1159417","question":"<p>Phân s\u1ed1 nào d\u01b0\u1edbi \u0111ây bé h\u01a1n phân s\u1ed1 <span class=\"math-tex\">$\\dfrac{5}{7}$<\/span>?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{42}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{6}{7}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{26}{35}$<\/span>","<strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{25}{35}$<\/span>"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{42}$<\/span><\/span><\/p><p>Ta có: <span class=\"math-tex\">$\\dfrac{5}{7}=\\dfrac{30}{42}>\\dfrac{25}{42}$<\/span> nên <span style=\"color:#16a085;\">A \u0111úng<\/span>.<\/p><p> <span class=\"math-tex\">$\\dfrac{5}{7}<\\dfrac{6}{7}$<\/span> nên <span style=\"color:#e74c3c;\">B sai<\/span>.<\/p><p> <span class=\"math-tex\">$\\dfrac{5}{7}=\\dfrac{25}{35}<\\dfrac{26}{35}$<\/span> nên <span style=\"color:#e74c3c;\">C, D sai<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-18 01:55:51","option_type":"math","len":0},{"id":"1151","post_id":"7561","mon_id":"1159414","chapter_id":"1159417","question":"<p>Phân s\u1ed1 nào d\u01b0\u1edbi \u0111ây l\u1edbn h\u01a1n phân s\u1ed1 <span class=\"math-tex\">$\\dfrac{4}{9}$<\/span>?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{35}{81}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{23}{63}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{23}{45}$<\/span>","<strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{23}{81}$<\/span>"],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{23}{45}$<\/span><\/span><\/p><p>Ta có: <span class=\"math-tex\">$\\dfrac{4}{9}=\\dfrac{36}{81}>\\dfrac{35}{81}$<\/span> nên <span style=\"color:#e74c3c;\">A sai<\/span>.<\/p><p> <span class=\"math-tex\">$\\dfrac{4}{9}=\\dfrac{28}{63}>\\dfrac{23}{63}$<\/span> nên <span style=\"color:#e74c3c;\">B sai<\/span>.<\/p><p> <span class=\"math-tex\">$\\dfrac{4}{9}=\\dfrac{20}{45}<\\dfrac{23}{45}$<\/span> nên <span style=\"color:#16a085;\">C \u0111úng<\/span>.<\/p><p> <span class=\"math-tex\">$\\dfrac{4}{9}=\\dfrac{36}{81}>\\dfrac{23}{81}$<\/span> nên <span style=\"color:#e74c3c;\">D sai<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-18 01:56:40","option_type":"math","len":0},{"id":"1154","post_id":"7561","mon_id":"1159414","chapter_id":"1159417","question":"<p>Trong các phân s\u1ed1 sau, phân s\u1ed1 nào là phân s\u1ed1 t\u1ed1i gi\u1ea3n?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{21}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{121}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{13}{40}$<\/span>","<strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{25}{100}$<\/span>"],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{13}{40}$<\/span><\/span><\/p><p>Phân s\u1ed1 <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\dfrac{13}{40}$<\/span> <\/span>là phân s\u1ed1 t\u1ed1i gi\u1ea3n.<\/p><p><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{21}=\\dfrac{3}{7}$<\/span><\/p><p><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{121}=\\dfrac{1}{11}$<\/span><\/p><p><strong>D. <\/strong><span class=\"math-tex\">$\\dfrac{25}{100}=\\dfrac{1}{4}$<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-18 02:03:47","option_type":"math","len":0}]}