{"common":{"save":0,"post_id":"7566","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1187","post_id":"7566","mon_id":"1159414","chapter_id":"1159417","question":"<p>M\u1ed9t t\u1ea5m bìa có chi\u1ec1u dài là <span class=\"math-tex\">$\\dfrac{6}{5}$<\/span> m, chi\u1ec1u r\u1ed9ng là <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span> m. Chu vi t\u1ea5m bìa là:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{19}$<\/span> m","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{10}$<\/span> m","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{29}{10}$<\/span> m","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{29}$<\/span> m"],"correct":"3","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{29}{10}$<\/span> m.<\/span><\/p><p>Chu vi t\u1ea5m bìa là <\/p><p><span class=\"math-tex\">$2\\times\\bigg(\\dfrac{6}{5}+\\dfrac{1}{4}\\bigg)=2\\times\\bigg(\\dfrac{24}{20}+\\dfrac{5}{20}\\bigg)=2\\times\\dfrac{29}{20}=\\dfrac{29}{10}$<\/span> (m).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:47:06","option_type":"math","len":0},{"id":"1189","post_id":"7566","mon_id":"1159414","chapter_id":"1159417","question":"<p>M\u1ed9t hình ch\u1eef nh\u1eadt có chi\u1ec1u dài là <span class=\"math-tex\">$\\dfrac{7}{2}$<\/span> m, chi\u1ec1u dài h\u01a1n r\u1ed9ng là <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span> m. Di\u1ec7n tích hình ch\u1eef nh\u1eadt \u0111ó là:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{132}{13}$<\/span> m²","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{122}{13}$<\/span> m²","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{13}{12}$<\/span> m²","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{133}{12}$<\/span> m²"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{133}{12}$<\/span> m².<\/span><\/p><p>Chi\u1ec1u r\u1ed9ng là <span class=\"math-tex\">$\\dfrac{7}{2}-\\dfrac{1}{3}=\\dfrac{21}{6}-\\dfrac{2}{6}=\\dfrac{19}{6}$<\/span> (m).<\/p><p>Di\u1ec7n tích là <span class=\"math-tex\">$\\dfrac{7}{2}\\times\\dfrac{19}{6}=\\dfrac{133}{12}$<\/span> (m²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:51:05","option_type":"math","len":0},{"id":"1191","post_id":"7566","mon_id":"1159414","chapter_id":"1159417","question":"<p><span class=\"math-tex\">$\\dfrac{5}{7}+\\dfrac{7}{5}-1$<\/span> =<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{29}{35}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{33}{35}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{39}{35}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{43}{35}$<\/span>"],"correct":"3","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{39}{35}$<\/span>.<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{5}{7}+\\dfrac{7}{5}-1=\\dfrac{25}{35}+\\dfrac{49}{35}-1=\\dfrac{74}{35}-1=\\dfrac{74}{35}-\\dfrac{35}{35}=\\dfrac{39}{35}$<\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:54:31","option_type":"math","len":0}]}
