Ôn tập chương I-level2

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Ôn tập chương IBài tập trung bình

{"common":{"save":0,"post_id":"753","level":2,"total":20,"point":5,"point_extra":0},"segment":[{"id":"821","post_id":"753","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":" <center><img src='img\/1.png' \/><\/center> <br\/> S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p P = {13; 15; 17;....; 85; 87} l\u00e0: ","select":["A. 74 ","B. 37 ","C. 38","D. 44"],"hint":"T\u00ednh s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb t\u1eeb 13 \u0111\u1ebfn 87","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/> Nh\u1eadn th\u1ea5y d\u00e3y s\u1ed1 13; 15; 17;...; 85; 87 l\u00e0 d\u00e3y c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb <br\/> N\u00ean s\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p c\u0169ng ch\u00ednh l\u00e0 s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb <br\/> S\u1ed1 s\u1ed1 h\u1ea1ng = (s\u1ed1 h\u1ea1ng cu\u1ed1i - s\u1ed1 h\u1ea1ng \u0111\u1ea7u) : kho\u1ea3ng c\u00e1ch + 1<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span> <br\/> X\u00e9t d\u00e3y s\u1ed1 13; 15; 17; ...; 85; 87 <br\/> Ta th\u1ea5y d\u00e3y tr\u00ean l\u00e0 d\u00e3y s\u1ed1 c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb <br\/> S\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y s\u1ed1 tr\u00ean l\u00e0: (87 - 13) : 2 + 1 = 38 s\u1ed1 h\u1ea1ng<br\/> S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p P = {13; 15; 17; ...; 85; 87} c\u0169ng ch\u00ednh l\u00e0 s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y s\u1ed1 tr\u00ean <br\/> N\u00ean t\u1eadp h\u1ee3p P c\u00f3 38 ph\u1ea7n t\u1eed <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. 38<\/span> ","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:46"},{"id":"822","post_id":"753","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\/1.png' \/><\/center> <br\/> S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean ch\u1eb5n l\u1edbn h\u01a1n 13 v\u00e0 nh\u1ecf h\u01a1n 3000 l\u00e0: ","select":["A. 1493 ","B. 2987 ","C. 1492","D. M\u1ed9t s\u1ed1 kh\u00e1c"],"hint":"T\u00ednh s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb t\u1eeb 14 \u0111\u1ebfn 2998","explain":"H\u01b0\u1edbng d\u1eabn:<\/span><br\/> G\u1ecdi A l\u00e0 t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean ch\u1eb5n l\u1edbn h\u01a1n 13 v\u00e0 nh\u1ecf h\u01a1n 3000 l\u00e0: <br\/> A = {14; 16; 18;...; 2996; 2998} <br\/> D\u00e3y tr\u00ean l\u00e0 d\u00e3y c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb <br\/> N\u00ean s\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p c\u0169ng ch\u00ednh l\u00e0 s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb <br\/> S\u1ed1 s\u1ed1 h\u1ea1ng = (s\u1ed1 h\u1ea1ng cu\u1ed1i - s\u1ed1 h\u1ea1ng \u0111\u1ea7u) : kho\u1ea3ng c\u00e1ch + 1<\/span> <br\/><br\/> B\u00e0i gi\u1ea3i:<\/span> <br\/> G\u1ecdi A l\u00e0 t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean ch\u1eb5n l\u1edbn h\u01a1n 13 v\u00e0 nh\u1ecf h\u01a1n 3000 l\u00e0: <br\/> A = {14; 16; 18; ...; 2996; 2998} <br\/> X\u00e9t d\u00e3y s\u1ed1 14; 16; 18; ...; 2996; 2998 <br\/> Ta th\u1ea5y d\u00e3y tr\u00ean l\u00e0 d\u00e3y s\u1ed1 c\u00e1ch \u0111\u1ec1u 2 \u0111\u01a1n v\u1ecb <br\/> S\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y s\u1ed1 tr\u00ean l\u00e0: (2998 - 14) : 2 + 1 = 1493 s\u1ed1 h\u1ea1ng<br\/> S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p A c\u0169ng ch\u00ednh l\u00e0 s\u1ed1 s\u1ed1 h\u1ea1ng c\u1ee7a d\u00e3y s\u1ed1 tr\u00ean <br\/> N\u00ean t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean ch\u1eb5n l\u1edbn h\u01a1n 13 v\u00e0 nh\u1ecf h\u01a1n 3000 c\u00f3 1493 ph\u1ea7n t\u1eed <br\/> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. 1493<\/span> ","column":2}]}]},"correct":"","level":"2","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:46"},{"id":"823","post_id":"753","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\/2.jpg' \/><\/center> <br\/> Cho t\u1eadp h\u1ee3p Q = {12; 78; 86} c\u00e1ch vi\u1ebft n\u00e0o sau \u0111\u00e2y sai?","select":["A. {78} $\\in$ Q ","B. 10 $\\notin$ Q ","C. {78; 86} $\\subset$ Q ","D. 12 $\\in$ Q"],"hint":"Ta c\u00f3 c\u00e1c c\u00e1ch vi\u1ebft \u0111\u00fang l\u00e0 ph\u1ea7n t\u1eed thu\u1ed9c t\u1eadp h\u1ee3p ho\u1eb7c t\u1eadp h\u1ee3p n\u00e0y ch\u1ee9a trong t\u1eadp h\u1ee3p kia","explain":" B\u00e0i gi\u1ea3i:<\/span> <br\/> A - Ta th\u1ea5y {78} l\u00e0 t\u1eadp h\u1ee3p kh\u00f4ng ph\u1ea3i 1 ph\u1ea7n t\u1eed <br\/> N\u00ean vi\u1ebft \"{78} $\\in$ Q \" l\u00e0 SAI <\/b> <br\/> B - V\u00ec t\u1eadp h\u1ee3p Q kh\u00f4ng c\u00f3 ph\u1ea7n t\u1eed 10 <br\/> N\u00ean vi\u1ebft \" $10 \\notin$ Q \" l\u00e0 \u0110\u00daNG <\/b> <br\/> C - T\u1eadp h\u1ee3p {78; 86} c\u00f3 78 $\\in$ Q v\u00e0 86 $\\in$ Q <br\/> N\u00ean vi\u1ebft \"{78; 86} $\\subset$ Q \" l\u00e0 \u0110\u00daNG <\/b> <br\/> D - Trong t\u1eadp h\u1ee3p Q c\u00f3 ph\u1ea7n t\u1eed 12 <br\/> N\u00ean vi\u1ebft \" 12 $\\in$ Q \" l\u00e0 \u0110\u00daNG <\/b> <br\/> V\u1eady \u0111\u00e1p \u00e1n sai 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 09:14:46"}]}