{"common":{"save":0,"post_id":"7720","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1953","post_id":"7720","mon_id":"1159414","chapter_id":"1159461","question":"<p>Có bao nhiêu s\u1ed1 th\u1eadp phân x có hai ch\u1eef s\u1ed1 \u1edf ph\u1ea7n th\u1eadp phân sao cho <span style=\"color:#16a085;\"><strong>0,1 < x < 0,2<\/strong><\/span>.<\/p>","options":["<strong>A.<\/strong> 8","<strong>B.<\/strong> 9","<strong>C.<\/strong> 10","<strong>D.<\/strong> 7"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 9<\/span><\/p><p>Các s\u1ed1 th\u1eadp phân x có hai ch\u1eef s\u1ed1 \u1edf ph\u1ea7n th\u1eadp phân sao cho 0,1 < x < 0,2 là:<\/p><p>0,11; 0,12; 0,13; 0,14; 0,15; 0,16; 0,17; 0,18; 0,19.<\/p><p>V\u1eady có 9 s\u1ed1 th\u1ecfa mãn.<\/p>","type":"choose","extra_type":"flower","time":"0","user_id":"131","test":"0","date":"2024-09-25 02:08:09","option_type":"txt","len":0},{"id":"1955","post_id":"7720","mon_id":"1159414","chapter_id":"1159461","question":"<p>Có bao nhiêu s\u1ed1 th\u1eadp phân có th\u1ec3 vi\u1ebft vào ch\u1ed7 ch\u1ea5m sao cho <span style=\"color:#e74c3c;\"><strong>2,5 < ... < 2,6<\/strong><\/span>.<\/p>","options":["<strong>A.<\/strong> Không có s\u1ed1 nào","<strong>B.<\/strong> 10 s\u1ed1","<strong>C.<\/strong> 100 s\u1ed1","<strong>D.<\/strong> Vô s\u1ed1"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> Vô s\u1ed1<\/span><\/p><p>Ta có:<br \/>2,5 = 2,50 = 2,500 = 2,500...<br \/>2,6 = 2,60 = 2,600 = 2,600...<\/p><p>Do v\u1eady ta có:<br \/>2,5 = 2,50 < 2,51 < 2,52 < …. < 2,60<br \/>2,5 = 2,500 < 2,501 < 2,502 < … < 2,600<br \/>…<\/p><p>Nh\u01b0 v\u1eady có vô s\u1ed1 s\u1ed1 th\u1eadp phân \u0111i\u1ec1n vào ch\u1ed7 ch\u1ea5m sao cho 2,5 < ... < 2,6.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-25 02:11:08","option_type":"txt","len":2},{"id":"1956","post_id":"7720","mon_id":"1159414","chapter_id":"1159461","question":"<p>Có 3 can d\u1ea7u A, B, C. Can A có 6,006 <span class=\"math-tex\">$l$<\/span> d\u1ea7u, can B có 606 <span class=\"math-tex\">$ml$<\/span> d\u1ea7u, can C có 6000 <span class=\"math-tex\">$ml$<\/span> d\u1ea7u. Ch\u1ecdn câu <strong>\u0111úng<\/strong>.<\/p>","options":["<strong>A.<\/strong> Can A có ít d\u1ea7u nh\u1ea5t","<strong>B.<\/strong> Can B có ít d\u1ea7u nh\u1ea5t","<strong>C.<\/strong> Can C có ít d\u1ea7u nh\u1ea5t","<strong>D.<\/strong> Can C có nhi\u1ec1u d\u1ea7u nh\u1ea5t"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> Can B có ít d\u1ea7u nh\u1ea5t<\/span><\/p><p>\u0110\u1ed5i: 6,006 <span class=\"math-tex\">$l$<\/span> = 6006 <span class=\"math-tex\">$ml$<\/span><\/p><p>Vì 606 <span class=\"math-tex\">$ml$<\/span> < 6000 <span class=\"math-tex\">$ml$<\/span> < 6006 <span class=\"math-tex\">$ml$<\/span> nên can A có nhi\u1ec1u d\u1ea7u nh\u1ea5t, <span style=\"color:#16a085;\"><strong>can B có ít d\u1ea7u nh\u1ea5t<\/strong><\/span>.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-25 02:14:17","option_type":"txt","len":2}]}
