{"common":{"save":0,"post_id":"5789","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8138","post_id":"5789","mon_id":"1158532","chapter_id":"1158659","question":"<p>Cho các s\u1ed1 2, 4, 8, 16. Nh\u1eefng t\u1ec9 l\u1ec7 th\u1ee9c \u0111\u01b0\u1ee3c l\u1eadp t\u1eeb b\u1ed1n s\u1ed1 trên là<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{4}=\\dfrac{8}{16}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{8}=\\dfrac{4}{16}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{16}=\\dfrac{8}{4}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{4}{8}=\\dfrac{2}{16}$<\/span>"],"correct":"[\"1\",\"2\"]","level":"2","hint":"","answer":"<p>Vì 2 . 16 = 4 . 8 nên các t\u1ec9 l\u1ec7 th\u1ee9c \u0111\u01b0\u1ee3c l\u1eadp t\u1eeb các s\u1ed1 trên là<\/p><p><span class=\"math-tex\">$\\dfrac{2}{4}=\\dfrac{8}{16};\\dfrac{2}{8}=\\dfrac{4}{16};\\dfrac{16}{4}=\\dfrac{8}{4};\\dfrac{16}{8}=\\dfrac{4}{2}$<\/span><\/p><p>Các \u0111áp án \u0111úng là <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{4}=\\dfrac{8}{16}$<\/span> và <strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{8}=\\dfrac{4}{16}$<\/span><\/span><\/p>","type":"checkbox","extra_type":"classic-checkbox","time":"0","user_id":"131","test":"1","date":"2022-05-26 03:56:33","option_type":"math","len":0},{"id":"8139","post_id":"5789","mon_id":"1158532","chapter_id":"1158659","question":"<p>Tìm x trong t\u1ec9 l\u1ec7 th\u1ee9c sau<\/p><p><span class=\"math-tex\">$\\dfrac{x}{10}=\\dfrac{-2,5}{4}$<\/span><\/p>","options":["x = 6,25","x = -25","x = -6,25","x = 25"],"correct":"3","level":"2","hint":"","answer":"<p>Vì <span class=\"math-tex\">$\\dfrac{x}{10}=\\dfrac{-2,5}{4}$<\/span> nên x = <span class=\"math-tex\">$\\dfrac{10 . (-2,5)}{4}$<\/span> = -6,25<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\">x = -6,25<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-26 04:00:11","option_type":"txt","len":0},{"id":"8141","post_id":"5789","mon_id":"1158532","chapter_id":"1158659","question":"<p>Tìm y trong t\u1ec9 l\u1ec7 th\u1ee9c sau<\/p><p><span class=\"math-tex\">$\\dfrac{-3}{5}=\\dfrac{y}{-12,5}$<\/span><\/p>","options":["<strong>A.<\/strong> y = -7,5","<strong>B. <\/strong>y = 7,5","<strong>C. <\/strong>y = -37,5","<strong>D.<\/strong> y = 37,5"],"correct":"2","level":"2","hint":"","answer":"<p>Vì <span class=\"math-tex\">$\\dfrac{-3}{5}=\\dfrac{y}{-12,5}$<\/span> nên y = <span class=\"math-tex\">$\\dfrac{(-3).(-12,5)}{5}$<\/span> = 7,5<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"> <strong>B. <\/strong>y = 7,5<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-05-27 02:11:52","option_type":"txt","len":1}]}