{"common":{"save":0,"post_id":"744","level":2,"total":20,"point":5,"point_extra":0},"segment":[{"id":"681","post_id":"744","mon_id":"0","chapter_id":"0","question":"H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang thay v\u00e0o d\u1ea5u <span class='basic_hoi_black'>?<\/span>","options":{"time":24,"part":[{"title":"H\u00e3y ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang thay v\u00e0o d\u1ea5u <span class='basic_hoi_black'>?<\/span>","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='img\/3.jpg' \/><\/center> <br\/> N\u1ebfu a $\\vdots$ 15 v\u00e0 b $\\vdots$ 15 th\u00ec 15 l\u00e0 <span class='basic_hoi_black'>?<\/span> c\u1ee7a a v\u00e0 b?","select":["A. \u01af\u1edbc chung ","B. B\u1ed9i chung "],"hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: <br\/> V\u00ec a $\\vdots$ 15 $\\Rightarrow$ 15 l\u00e0 \u01b0\u1edbc c\u1ee7a a <br\/> V\u00e0 b $\\vdots$ 15 $\\Rightarrow$ 15 l\u00e0 \u01b0\u1edbc c\u1ee7a b <br\/> $\\Rightarrow$ 15 l\u00e0 \u01b0\u1edbc chung c\u1ee7a a v\u00e0 b <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: \u01af\u1edbc chung<\/span> ","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:45"},{"id":"682","post_id":"744","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='img\/3.jpg' \/><\/center> <br\/> 9 l\u00e0 \u01b0\u1edbc chung c\u1ee7a 720 v\u00e0 432. <b> \u0110\u00daNG <\/b> hay <b> SAI <\/b>?","select":["A. \u0110\u00daNG ","B. SAI "],"hint":"","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span> <br\/> X\u00e9t th\u01b0\u01a1ng 720 : 9 v\u00e0 432 : 9 <br\/> N\u1ebfu 720 $\\vdots$ 9 v\u00e0 432 $\\vdots$ 9 th\u00ec 9 l\u00e0 \u01b0\u1edbc chung c\u1ee7a 720 v\u00e0 432 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> Ta c\u00f3: 720 : 9 = 80 v\u00e0 432 : 9 = 48 <br\/> $\\Rightarrow$ 720 $\\vdots$ 9 v\u00e0 432 $\\vdots$ 9 $\\Rightarrow$ 9 l\u00e0 \u01b0\u1edbc chung c\u1ee7a 720 v\u00e0 432 <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh ''9 l\u00e0 \u01b0\u1edbc chung c\u1ee7a 720 v\u00e0 432'' l\u00e0 <b> \u0110\u00daNG <\/b> ","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:45"},{"id":"683","post_id":"744","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":" <center><img src='img\/11.jpg' \/><\/center> <br\/> T\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc chung c\u1ee7a 20 v\u00e0 24 l\u00e0:","select":["A. $\\left\\{ 1; 2; 4 \\right\\}$ ","B. $\\left\\{ 1; 2; 3; 8 \\right\\}$ ","C. $\\left\\{ 2; 4; 6; 10 \\right\\}$","D. $\\left\\{ 1; 2; 3; 4 \\right\\}$"],"hint":"Ta \u0111i t\u00ecm t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 m\u00e0 20 v\u00e0 24 \u0111\u1ec1u chia h\u1ebft cho t\u1ea5t c\u1ea3 c\u00e1c s\u1ed1 trong t\u1eadp h\u1ee3p \u0111\u00f3","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> X\u00e9t t\u1eebng t\u1eadp h\u1ee3p <br\/> N\u1ebfu 20 v\u00e0 24 chia h\u1ebft cho m\u1ecdi s\u1ed1 trong t\u1eadp h\u1ee3p \u0111\u00f3 th\u00ec \u0111\u00f3 l\u00e0 t\u1eadp c\u00e1c \u01b0\u1edbc chung c\u1ee7a 20 v\u00e0 24 <br\/> N\u1ebfu 20 ho\u1eb7c 24 kh\u00f4ng chia h\u1ebft cho 1 s\u1ed1 trong t\u1eadp h\u1ee3p th\u00ec \u0111\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 t\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc chung c\u1ee7a 20 v\u00e0 24 <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> A - X\u00e9t t\u1eadp h\u1ee3p {1; 2; 4} ta c\u00f3: <br\/> V\u00ec 20 $\\vdots$ 1; 20 $\\vdots$ 2 v\u00e0 20 $\\vdots$ 4; 24 $\\vdots$ 1; 24 $\\vdots$ 2; 24 $\\vdots$ 4 <br\/> $\\Rightarrow$ <b> {1; 2; 4} l\u00e0 t\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc chung c\u1ee7a 20 v\u00e0 24 <\/b> <br\/> B - X\u00e9t t\u1eadp h\u1ee3p {1; 2; 3; 8} ta c\u00f3: <br\/> V\u00ec 20 $\\not \\vdots$ 3 v\u00e0 20 $\\not \\vdots$ 8 $\\Rightarrow$ {1; 2; 3; 8} kh\u00f4ng ph\u1ea3i t\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc chung c\u1ee7a 20 v\u00e0 24 <br\/> C - X\u00e9t t\u1eadp h\u1ee3p {2; 4; 6; 10} ta c\u00f3: <br\/> V\u00ec 20 $\\not \\vdots$ 6 $\\Rightarrow$ {2; 4; 6; 10} kh\u00f4ng ph\u1ea3i t\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc chung c\u1ee7a 20 v\u00e0 24 <br\/> D - X\u00e9t t\u1eadp h\u1ee3p {1; 2; 3; 4} ta c\u00f3: <br\/> V\u00ec 20 $\\not \\vdots$ 3 $\\Rightarrow$ {1; 2; 3; 4} kh\u00f4ng ph\u1ea3i t\u1eadp h\u1ee3p c\u00e1c \u01b0\u1edbc chung c\u1ee7a 20 v\u00e0 24 <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A <\/span> ","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:45"}]}