Tập hợp các số nguyên - Bài tập nâng cao

Home Lớp 6 Toán lớp 6 - Sách kết nối tri thức Bài 13: Tập hợp các số nguyênBài tập nâng cao

{"common":{"save":0,"post_id":"4449","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5917","post_id":"4449","mon_id":"1158113","chapter_id":"1158128","question":"Li\u1ec7t kê các ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p sau: <\/p>$M=\\{ x\\in \\mathbb{Z} | -3\\le x <3\\}$<\/span><\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/do-vat\/chimau.png\" \/><\/div>","options":["A. <\/strong>$M=\\{ -3; -2;-1;1;2 \\}$<\/span>","B. <\/strong>$M=\\{ -3; -2;-1;0;1;2;3 \\}$<\/span>","C. <\/strong>$M=\\{ -3; -2;-1;0;1;2 \\}$<\/span>"],"correct":"3","level":"3","hint":"T\u1eadp h\u1ee3p M g\u1ed3m các s\u1ed1 nguyên l\u1edbn h\u01a1n ho\u1eb7c b\u1eb1ng -3 và nh\u1ecf h\u01a1n 3.<\/p>","answer":"T\u1eadp h\u1ee3p M g\u1ed3m các s\u1ed1 nguyên l\u1edbn h\u01a1n ho\u1eb7c b\u1eb1ng -3 và nh\u1ecf h\u01a1n 3.<\/p>A.<\/strong>$M=\\{ -3; -2;-1;1;2 \\}$<\/span>          sai<\/span> vì thi\u1ebfu s\u1ed1 0<\/p>B. <\/strong>$M=\\{ -3; -2;-1;0;1;2;3 \\}$<\/span>  sai<\/span> vì s\u1ed1 3 không th\u1ecfa mãn<\/p>Do \u0111ó \u0111áp án \u0111úng là: C. $M=\\{ -3; -2;-1;0;1;2 \\}$<\/span>.<\/span><\/strong><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-08-18 13:34:31","option_type":"math","len":0},{"id":"5923","post_id":"4449","mon_id":"1158113","chapter_id":"1158128","question":"Cho t\u1eadp h\u1ee3p $A=\\{ x\\in \\mathbb{Z} | -7\\le x< 5\\}$<\/span>.<\/p>Tìm nh\u1eefng s\u1ed1 nguyên thu\u1ed9c t\u1eadp A?<\/p>","options":["0","7","-7","-8"],"correct":"[\"1\",\"3\"]","level":"3","hint":"Li\u1ec7t kê các ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p A.<\/p>","answer":"Ta có: $A=\\{ -7; -6;-5;-4;-3;-2;-1;0;1;2;3;4 \\}$<\/span>.<\/p>V\u1eady \u0111áp án \u0111úng là: 0<\/span><\/strong> <\/span>và -7<\/strong><\/span>.<\/span><\/p>","type":"checkbox","extra_type":"balloon","time":"0","user_id":"132","test":"1","date":"2021-08-19 01:30:30","option_type":"txt","len":0},{"id":"5925","post_id":"4449","mon_id":"1158113","chapter_id":"1158128","question":"Vi\u1ebft l\u1ea1i t\u1eadp h\u1ee3p M b\u1eb1ng cách ch\u1ec9 ra các tính ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a các ph\u1ea7n t\u1eed c\u1ee7a nó.<\/p>$M=\\{ -4;-5;-6;-7;-8;-9;-10;-11\\}$<\/span><\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/do-vat\/book.png\" \/><\/div>","options":["A. <\/strong>$\\small M=\\{x\\in \\mathbb{Z}|-4 < x< -11 \\}$<\/span>","B. <\/strong>$\\small M=\\{x\\in \\mathbb{Z}|-4 \\le x\\le -11 \\}$<\/span>","C. <\/strong>$\\small M=\\{x\\in \\mathbb{Z}|-11 \\le x\\le -4 \\}$<\/span>","D. <\/strong>$\\small M=\\{x\\in \\mathbb{Z}|-11 < x< -4 \\}$<\/span>"],"correct":"3","level":"3","hint":"T\u1eadp h\u1ee3p M g\u1ed3m các s\u1ed1 nguyên t\u1eeb -11 \u0111\u1ebfn -4.<\/p>","answer":"Vì t\u1eadp h\u1ee3p M g\u1ed3m các s\u1ed1 nguyên t\u1eeb -11 \u0111\u1ebfn -4 nên ta có th\u1ec3 vi\u1ebft l\u1ea1i t\u1eadp M nh\u01b0 sau:<\/p><\/span>$M=\\{x\\in \\mathbb{Z}|-11 \\le x\\le -4 \\}$<\/span><\/span>.<\/span><\/p>V\u1eady \u0111áp án \u0111úng là C<\/span><\/strong><\/p>***Ngoài ra, con có th\u1ec3 vi\u1ebft l\u1ea1i t\u1eadp M nh\u01b0 sau:<\/p> $M=\\{x\\in \\mathbb{Z}|-11 \\le x < -5 \\}$<\/span>         (dùng d\u1ea5u <)<\/span><\/p>ho\u1eb7c $M=\\{x\\in \\mathbb{Z}|-12 < x < -5 \\}$<\/span>  (dùng d\u1ea5u <)<\/span><\/p>ho\u1eb7c $M=\\{x\\in \\mathbb{Z}|-12 < x \\le -4 \\}$<\/span>  (dùng d\u1ea5u <)<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-08-19 01:47:07","option_type":"math","len":0}]}