{"common":{"save":0,"post_id":"6948","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2468","post_id":"6948","mon_id":"1159012","chapter_id":"1159019","question":"<p>L\u1edbp 4A c&oacute; 45 b\u1ea1n, trong \u0111&oacute; c&oacute; 24&nbsp;b\u1ea1n h\u1ecdc&nbsp;n\u1eef.&nbsp;<\/p><p>S\u1ed1 b\u1ea1n h\u1ecdc n\u1eef b\u1eb1ng&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;s\u1ed1 h\u1ecdc sinh c\u1ea3 l\u1edbp.<\/p><p>T&igrave;m ph&acirc;n s\u1ed1 t\u1ed1i gi\u1ea3n \u0111\u1ec3 \u0111i\u1ec1n v&agrave;o d\u1ea5u ch\u1ea5m h\u1ecfi.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{8}{15}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{15}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{8}{25}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{15}$<\/span>"],"correct":"1","level":"2","hint":"","answer":"<p>S\u1ed1 b\u1ea1n h\u1ecdc n\u1eef b\u1eb1ng&nbsp;<span class=\"math-tex\">$\\dfrac{24}{45}$<\/span>&nbsp;s\u1ed1 h\u1ecdc sinh c\u1ea3 l\u1edbp.<\/p><p>R&uacute;t g\u1ecdn ph&acirc;n s\u1ed1&nbsp;<span class=\"math-tex\">$\\dfrac{24}{45}=\\dfrac{24:3}{45:3}=\\dfrac{8}{15}$<\/span>&nbsp;.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{8}{15}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-07 02:27:24","option_type":"math","len":0},{"id":"2471","post_id":"6948","mon_id":"1159012","chapter_id":"1159019","question":"<p>C&oacute; t\u1ea5t c\u1ea3 30 kg tr&aacute;i c&acirc;y. Trong \u0111&oacute; c&oacute; 10 kg t&aacute;o.&nbsp;<\/p><p>S\u1ed1 ki-l&ocirc;-gam t&aacute;o b\u1eb1ng&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;t\u1ed5ng s\u1ed1 ki-l&ocirc;-gam tr&aacute;i c&acirc;y.<\/p><p>T&igrave;m ph&acirc;n s\u1ed1 t\u1ed1i gi\u1ea3n \u0111\u1ec3 \u0111i\u1ec1n v&agrave;o d\u1ea5u ch\u1ea5m h\u1ecfi.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{3}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{10}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{5}$<\/span>"],"correct":"2","level":"2","hint":"","answer":"<p>S\u1ed1 ki-l&ocirc;-gam t&aacute;o b\u1eb1ng&nbsp;<span class=\"math-tex\">$\\dfrac{10}{30}$<\/span>&nbsp;t\u1ed5ng s\u1ed1 ki-l&ocirc;-gam tr&aacute;i c&acirc;y.<\/p><p>R&uacute;t g\u1ecdn ph&acirc;n s\u1ed1&nbsp;<span class=\"math-tex\">$\\dfrac{10}{30}=\\dfrac{10:10}{30:10}=\\dfrac{1}{3}$<\/span>&nbsp;.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{1}{3}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-07 02:31:50","option_type":"math","len":0},{"id":"2473","post_id":"6948","mon_id":"1159012","chapter_id":"1159019","question":"<p>So s&aacute;nh&nbsp;<span class=\"math-tex\">$\\dfrac{25}{24}$<\/span>&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;1.<\/p>","options":["<strong>&gt;<\/strong>","<strong>&lt;<\/strong>","<strong>=<\/strong>"],"correct":"1","level":"2","hint":"","answer":"<p>V&igrave;&nbsp;<span class=\"math-tex\">$\\dfrac{25}{24}>\\dfrac{24}{24}$<\/span>&nbsp;n&ecirc;n&nbsp;<span class=\"math-tex\">$\\dfrac{25}{24}>1$<\/span>&nbsp;.<\/p><p>Ch\u1ecdn ng&ocirc;i sao ghi d\u1ea5u <span style=\"color:#16a085;\"><strong>&gt;<\/strong><\/span>.<\/p>","type":"choose","extra_type":"star","time":"0","user_id":"131","test":"0","date":"2024-02-07 02:35:34","option_type":"txt","len":0}]}