{"common":{"save":0,"post_id":"4779","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8036","post_id":"4779","mon_id":"1158113","chapter_id":"1158128","question":"<p>Dãy s\u1ed1 nguyên nào sau \u0111ây g\u1ed3m các <strong>b\u1ed9i âm c\u1ee7a 8<\/strong> ?<\/p>","options":["0 ; -8; -16; -32","-8; -16; -32; -48","-8; -16; 24; -32"],"correct":"2","level":"2","hint":"<p>B\u1ed9i âm c\u1ee7a 8 th\u1ecfa mãn hai \u0111i\u1ec1u ki\u1ec7n \u0111ó là: <strong>s\u1ed1 \u0111ó ph\u1ea3i chia h\u1ebft cho 8 và s\u1ed1 \u0111ó ph\u1ea3i là s\u1ed1 nguyên âm<\/strong><\/p><p>\u0110\u1ec3 tìm các b\u1ed9i âm c\u1ee7a 8 ta l\u1ea5y 8 l\u1ea7n l\u01b0\u1ee3t nhân v\u1edbi -1; -2; -3; ...<\/p>","answer":"<p>L\u1ea5y 8 l\u1ea7n l\u01b0\u1ee3t nhân v\u1edbi -1; -2; -3; -4; ... ta \u0111\u01b0\u1ee3c các b\u1ed9i âm c\u1ee7a 8 g\u1ed3m -8; -16; -24; -32; ...<\/p><p>Xét các \u0111áp án:<\/p><p>0 ; -8; -16; -32 <span style=\"color:#e74c3c;\">sai<\/span> vì 0 chia h\u1ebft cho 8 nh\u01b0ng 0 không là s\u1ed1 nguyên âm<\/p><p>-8; -16; -32; -48 <span style=\"color:#16a085;\">\u0111úng<\/span><\/p><p>-8; -16; 24; -32 <span style=\"color:#e74c3c;\">sai<\/span> vì 24 chia h\u1ebft cho 8 nh\u01b0ng 24 không là s\u1ed1 nguyên âm<\/p><p>V\u1eady \u0111áp án \u0111úng là <span style=\"color:#16a085;\"><strong>-8; -16; -32; -48<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"1","date":"2021-10-02 12:16:22","option_type":"txt","len":2},{"id":"8037","post_id":"4779","mon_id":"1158113","chapter_id":"1158128","question":"<p>Tính (-230) : 23 + 15 = ?<\/p>","options":["25","-5","5"],"correct":"3","level":"2","hint":"<p>Th\u1ef1c hi\u1ec7n nhân chia tr\u01b0\u1edbc, c\u1ed9ng tr\u1eeb sau.<\/p>","answer":"<p>(-230) : 23 + 15 = (-10) + 15 = 5<\/p><p>V\u1eady \u0111áp án \u0111úng là <span style=\"color:#16a085;\"><strong>5<\/strong><\/span>.<\/p>","type":"choose","extra_type":"star","time":"0","user_id":"132","test":"1","date":"2021-10-02 12:19:36","option_type":"txt","len":0},{"id":"8038","post_id":"4779","mon_id":"1158113","chapter_id":"1158128","question":"<p>Các \u01b0\u1edbc c\u1ee7a 100 l\u1edbn h\u01a1n -10 và nh\u1ecf h\u01a1n 10 g\u1ed3m?<\/p>","options":["-1; -2; -4; -5","<span class=\"math-tex\">$\\pm$<\/span>1; <span class=\"math-tex\">$\\pm$<\/span>2; <span class=\"math-tex\">$\\pm$<\/span>4; <span class=\"math-tex\">$\\pm$<\/span>5","1; 2; 4; 5"],"correct":"2","level":"2","hint":"<p>Tìm các \u01b0\u1edbc c\u1ee7a 100 r\u1ed3i tìm các \u01b0\u1edbc c\u1ee7a 100 l\u1edbn h\u01a1n -10 và nh\u1ecf h\u01a1n 10.<\/p>","answer":"<p>Các \u01b0\u1edbc c\u1ee7a 100 g\u1ed3m <span class=\"math-tex\">$\\pm$<\/span>1; <span class=\"math-tex\">$\\pm$<\/span>2; <span class=\"math-tex\">$\\pm$<\/span>4; <span class=\"math-tex\">$\\pm$<\/span>5; <span class=\"math-tex\">$\\pm$<\/span>10; <span class=\"math-tex\">$\\pm$<\/span>20; <span class=\"math-tex\">$\\pm$<\/span>25; <span class=\"math-tex\">$\\pm$<\/span>50; <span class=\"math-tex\">$\\pm$<\/span>100<\/p><p>Các \u01b0\u1edbc c\u1ee7a 100 l\u1edbn h\u01a1n -10 và nh\u1ecf h\u01a1n 10 g\u1ed3m <span class=\"math-tex\">$\\pm$<\/span>1; <span class=\"math-tex\">$\\pm$<\/span>2; <span class=\"math-tex\">$\\pm$<\/span>4; <span class=\"math-tex\">$\\pm$<\/span>5<\/p><p>V\u1eady \u0111áp án \u0111úng là<span style=\"color:#16a085;\"><strong> <span class=\"math-tex\">$\\pm$<\/span>1; <span class=\"math-tex\">$\\pm$<\/span>2; <span class=\"math-tex\">$\\pm$<\/span>4; <span class=\"math-tex\">$\\pm$<\/span>5<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"1","date":"2021-10-02 12:24:49","option_type":"math","len":0}]}