{"common":{"save":0,"post_id":"6925","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2572","post_id":"6925","mon_id":"1159012","chapter_id":"1159024","question":"<p><span class=\"math-tex\">$\\dfrac{3}{4}\\mathbf{x}\\dfrac{3}{5}$<\/span> = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{3}{20}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{20}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{4}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{5}$<\/span>"],"correct":"2","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{3}{4}\\mathbf{x}\\dfrac{3}{5}$<\/span> = <span class=\"math-tex\">$\\dfrac{3\\mathbf{x}3}{4\\mathbf{x}5}$<\/span> = <span class=\"math-tex\">$\\dfrac{9}{20}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{20}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-11 02:46:44","option_type":"math","len":0},{"id":"2573","post_id":"6925","mon_id":"1159012","chapter_id":"1159024","question":"<p><span class=\"math-tex\">$\\dfrac{4}{5}\\mathbf{x}\\dfrac{6}{7}$<\/span> = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{24}{35}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{14}{25}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{12}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{24}{25}$<\/span>"],"correct":"1","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{4}{5}\\mathbf{x}\\dfrac{6}{7}$<\/span> = <span class=\"math-tex\">$\\dfrac{4\\mathbf{x}6}{5\\mathbf{x}7}$<\/span> = <span class=\"math-tex\">$\\dfrac{24}{35}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{24}{35}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-11 02:49:42","option_type":"math","len":0},{"id":"2575","post_id":"6925","mon_id":"1159012","chapter_id":"1159024","question":"<p><span class=\"math-tex\">$\\dfrac{6}{7}\\mathbf{x}\\dfrac{5}{11}$<\/span> = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{35}{77}$<\/span>","B. <span class=\"math-tex\">$\\dfrac{30}{70}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{30}{77}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{36}{70}$<\/span>"],"correct":"3","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{6}{7}\\mathbf{x}\\dfrac{5}{11}$<\/span> = <span class=\"math-tex\">$\\dfrac{6\\mathbf{x}5}{7\\mathbf{x}11}$<\/span> = <span class=\"math-tex\">$\\dfrac{30}{77}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{30}{77}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-11 02:53:46","option_type":"math","len":0}]}