{"common":{"save":0,"post_id":"7568","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1168","post_id":"7568","mon_id":"1159414","chapter_id":"1159417","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a ph&eacute;p t&iacute;nh:&nbsp;<span class=\"math-tex\">$\\dfrac{2}{3}\\times\\dfrac{4}{5}\\times\\dfrac{9}{4}$<\/span>&nbsp;<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{3}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{6}{5}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{4}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{20}$<\/span>"],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{6}{5}$<\/span><\/span><\/p><p><span class=\"math-tex\">$\\dfrac{2}{3}\\times\\dfrac{4}{5}\\times\\dfrac{9}{4} =\\dfrac{2\\times4\\times9}{3\\times5\\times4} =\\dfrac{2\\times2\\times2\\times3\\times3}{3\\times5\\times2\\times2} =\\dfrac{2\\times3}{5} =\\dfrac{6}{5}$<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:14:43","option_type":"math","len":0},{"id":"1171","post_id":"7568","mon_id":"1159414","chapter_id":"1159417","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a ph&eacute;p t&iacute;nh:&nbsp;<span class=\"math-tex\">$\\dfrac{3}{4}\\times\\dfrac{5}{7}\\times\\dfrac{16}{5} $<\/span><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{3}{7}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{7}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{12}{7}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{7}$<\/span>"],"correct":"3","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#27ae60;\"><\/span><span style=\"color:#16a085;\"><strong>C.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{12}{7}$<\/span><\/span><\/p><p><span class=\"math-tex\">$\\dfrac{3}{4}\\times\\dfrac{5}{7}\\times\\dfrac{16}{5} =\\dfrac{3\\times5\\times4\\times4}{4\\times7\\times5} =\\dfrac{3\\times4}{7} =\\dfrac{12}{7}$<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:18:26","option_type":"math","len":0},{"id":"1173","post_id":"7568","mon_id":"1159414","chapter_id":"1159417","question":"<p><span class=\"math-tex\">$4:\\dfrac{7}{10}$<\/span>&nbsp;b\u1eb1ng:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{4}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{40}{7}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{70}{4}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{70}$<\/span> "],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{40}{7}$<\/span><\/span><\/p><p><span class=\"math-tex\">$4:\\dfrac{7}{10}=4\\times\\dfrac{10}{7}=\\dfrac{40}{7}$<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:23:22","option_type":"math","len":0}]}