{"common":{"save":0,"post_id":"710","level":2,"total":20,"point":5,"point_extra":0},"segment":[{"id":"121","post_id":"710","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":[[2]],"list":[{"point":5,"ques":"Cho t\u1eadp h\u1ee3p C = {10; 20; 30;...; 300}. <br\/> Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y \u0111\u00fang:","select":["A. $ 320 \\in C$ ","B. T\u1eadp h\u1ee3p C c\u00f3 30 ph\u1ea7n t\u1eed ","C. {20; 30} $\\in C$ ","D. T\u1eadp h\u1ee3p C c\u00f3 4 ph\u1ea7n t\u1eed "],"hint":"X\u00e9t t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p sau \u0111\u00f3 x\u00e9t t\u1eebng \u0111\u00e1p \u00e1n","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> V\u00ec t\u1eadp h\u1ee3p C g\u1ed3m c\u00e1c ph\u1ea7n t\u1eed c\u00e1ch nhau 10 \u0111\u01a1n v\u1ecb, ph\u1ea7n t\u1eed nh\u1ecf nh\u1ea5t l\u00e0 10, ph\u1ea7n t\u1eed l\u1edbn nh\u1ea5t l\u00e0 300 <br\/> N\u00ean \u0111\u00e1p \u00e1n A sai <br\/> X\u00e9t c\u00e1c \u0111\u00e1p \u00e1n B, C, D xem \u0111\u00e1p \u00e1n n\u00e0o \u0111\u00fang<br\/> T\u1eadp h\u1ee3p C g\u1ed3m c\u00e1c s\u1ed1 tr\u00f2n ch\u1ee5c kh\u00f4ng nh\u1ecf h\u01a1n 10 v\u00e0 kh\u00f4ng l\u1edbn h\u01a1n 300<br\/> <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/> Nh\u1eadn x\u00e9t: T\u1eadp h\u1ee3p A g\u1ed3m c\u00e1c s\u1ed1 tr\u00f2n ch\u1ee5c t\u1eeb 10 \u0111\u1ebfn 300 <br\/>A - Kh\u1eb3ng \u0111\u1ecbnh $ 320 \\in C$ l\u00e0 <b> SAI <\/b> v\u00ec 320 > 300 <br\/> B - Kh\u1eb1ng \u0111\u1ecbnh ''T\u1eadp h\u1ee3p C c\u00f3 30 ph\u1ea7n t\u1eed'' l\u00e0 <b> \u0110\u00daNG <\/b> <br\/>V\u00ec s\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p C l\u00e0: (300 - 10) : 10 + 1 = 30 ph\u1ea7n t\u1eed <br\/> C - Kh\u1eb3ng \u0111\u1ecbnh {20; 30} $\\in A$ l\u00e0 <b> SAI <\/b> <br\/> V\u00ec k\u00ed hi\u1ec7u ''$\\in$'' ch\u1ec9 ph\u1ea7n t\u1eed n\u00e0o \u0111\u00f3 thu\u1ed9c 1 t\u1eadp h\u1ee3p ch\u1ee9 kh\u00f4ng ph\u1ea3i ch\u1ec9 t\u1eadp n\u00e0y thu\u1ed9c t\u1eadp kia<br\/> D - Kh\u1eb3ng \u0111\u1ecbnh ''T\u1eadp h\u1ee3p C c\u00f3 4 ph\u1ea7n t\u1eed'' l\u00e0 <b> SAI <\/b> <br\/> V\u00ec trong t\u1eadp h\u1ee3p C c\u00f3 ph\u1ea7n t\u1eed 30 ph\u1ea7n t\u1eed<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B<\/span>","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:37"},{"id":"122","post_id":"710","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":"Cho t\u1eadp h\u1ee3p D = {5; 10; 15; 20;...; 80}. <br\/> Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y \u0111\u00fang:","select":["A. $30 \\in D$ ","B. $ 42 \\in D$ ","C. T\u1eadp h\u1ee3p D c\u00f3 5 ph\u1ea7n t\u1eed ","D. $37 \\in D$ "],"hint":"X\u00e9t t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p sau \u0111\u00f3 x\u00e9t t\u1eebng \u0111\u00e1p \u00e1n","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> M\u1ed9t ph\u1ea7n t\u1eed ch\u1ec9 c\u00f3 $\\in$ ho\u1eb7c $\\notin$ t\u1eadp h\u1ee3p kia <br\/> C\u00f2n 1 t\u1eadp h\u1ee3p th\u00ec ho\u1eb7c $\\subset$ ho\u1eb7c $\\not\\subset$ t\u1eadp h\u1ee3p kia <br\/> V\u1eady kh\u1eb3ng \u0111\u1ecbnh B sai ta ch\u1ec9 x\u00e9t kh\u1eb3ng \u0111\u1ecbnh A, C v\u00e0 D <br\/> T\u1eadp h\u1ee3p D g\u1ed3m c\u00e1c s\u1ed1 chia h\u1ebft cho 5 kh\u00f4ng nh\u1ecf h\u01a1n 5 v\u00e0 kh\u00f4ng l\u1edbn h\u01a1n 80<br\/> <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/>Nh\u1eadn x\u00e9t: T\u1eadp h\u1ee3p D g\u1ed3m c\u00e1c s\u1ed1 chia h\u1ebft cho 5 kh\u00f4ng nh\u1ecf h\u01a1n 5 v\u00e0 kh\u00f4ng l\u1edbn h\u01a1n 80<br\/> A - Kh\u1eb3ng \u0111\u1ecbnh $30 \\in D$ l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> V\u00ec 30 chia h\u1ebft cho 5 v\u00e0 5 < 30 < 80<br\/> B - Kh\u1eb1ng \u0111\u1ecbnh ''42 $\\in D$'' l\u00e0 <b> SAI <\/b> <br\/>V\u00ec 42 kh\u00f4ng chia h\u1ebft cho 5<br\/> C - Kh\u1eb3ng \u0111\u1ecbnh ''t\u1eadp h\u1ee3p D c\u00f3 5 ph\u1ea7n t\u1eed'' l\u00e0 <b> SAI <\/b> <br\/> V\u00ec s\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p D l\u00e0: (80 - 5) : 5 + 1 =16 ph\u1ea7n t\u1eed<br\/> D - Kh\u1eb3ng \u0111\u1ecbnh ''37 $\\in D$'' l\u00e0 <b> SAI <\/b> <br\/> V\u00ec 37 kh\u00f4ng chia h\u1ebft cho 5<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 09:14:37"},{"id":"123","post_id":"710","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":[[3]],"list":[{"point":5,"ques":"Cho t\u1eadp h\u1ee3p G = {3; 6; 9; 12;...; 48}. <br\/> Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y \u0111\u00fang:","select":["A. $35 \\in G$ ","B. {47} $\\subset G$ ","C. $27 \\in G$ ","D. T\u1eadp h\u1ee3p G g\u1ed3m 48 ph\u1ea7n t\u1eed "],"hint":"X\u00e9t t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p sau \u0111\u00f3 x\u00e9t t\u1eebng \u0111\u00e1p \u00e1n","explain":"<span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn: <\/span> <br\/> Ta th\u1ea5y t\u1eadp h\u1ee3p G g\u1ed3m c\u00e1c s\u1ed1 chia h\u1ebft cho 3 kh\u00f4ng nh\u1ecf h\u01a1n 3 v\u00e0 kh\u00f4ng l\u1edbn h\u01a1n 48<br\/> D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p \u0111\u1ec3 x\u00e9t xem \u0111\u00e1p \u00e1n n\u00e0o \u0111\u00fang <br\/> S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p b\u1eb1ng (s\u1ed1 cu\u1ed1i - s\u1ed1 \u0111\u1ea7u) : kho\u1ea3ng c\u00e1ch + 1<br\/> <br\/><\/span><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> <br\/>Nh\u1eadn x\u00e9t: Ta th\u1ea5y t\u1eadp h\u1ee3p G g\u1ed3m c\u00e1c s\u1ed1 chia h\u1ebft cho 3 kh\u00f4ng nh\u1ecf h\u01a1n 3 v\u00e0 kh\u00f4ng l\u1edbn h\u01a1n 48<br\/> A - Kh\u1eb3ng \u0111\u1ecbnh $35 \\in G$ l\u00e0 <b> SAI <\/b> <br\/> V\u00ec 35 kh\u00f4ng chia h\u1ebft cho 3<br\/> B - Kh\u1eb1ng \u0111\u1ecbnh ''{47} $\\subset G$'' l\u00e0 <b> SAI <\/b> <br\/>V\u00ec 47 kh\u00f4ng chia h\u1ebft cho 3<br\/> C - Kh\u1eb3ng \u0111\u1ecbnh ''$27 \\in G$'' l\u00e0 <b> \u0110\u00daNG <\/b> <br\/> V\u00ec 27 chia h\u1ebft cho 3 v\u00e0 3 < 27 < 48 <br\/> D - Kh\u1eb3ng \u0111\u1ecbnh ''T\u1eadp h\u1ee3p G c\u00f3 48 ph\u1ea7n t\u1eed'' l\u00e0 <b> SAI <\/b> <br\/> V\u00ec s\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p G l\u00e0: (48 - 3) : 3 + 1 = 16 ph\u1ea7n t\u1eed<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C<\/span>","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:37"}]}