Ôn tập chương IX

Home Lớp 10 Toán lớp 10 - Sách Kết nối tri thức Ôn tập chương IXBài tập cơ bản

{"common":{"save":0,"post_id":"6714","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7383","mon_id":"1158767","chapter_id":"1158895","post_id":"6714","question":"Gieo m\u1ed9t \u0111\u1ed3ng ti\u1ec1n cân \u0111\u1ed1i và \u0111\u1ed3ng ch\u1ea5t b\u1ed1n l\u1ea7n. Xác su\u1ea5t \u0111\u1ec3 c\u1ea3 b\u1ed1n l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t s\u1ea5p là<\/p>","options":["A.<\/strong> $\\dfrac{4}{16}$<\/span>","B.<\/strong> $\\dfrac{2}{16}$<\/span>","C.<\/strong> $\\dfrac{1}{16}$<\/span><\/strong>","D.<\/strong> $\\dfrac{6}{16}$<\/span>"],"correct":"3","level":"1","hint":"","answer":"S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a không gian m\u1eabu là  $n(\\Omega)$<\/span> = 2.2.2.2 = 16.<\/p>G\u1ecdi A là bi\u1ebfn c\u1ed1 "C\u1ea3 b\u1ed1n l\u1ea7n gieo \u0111\u01b0\u1ee3c m\u1eb7t s\u1ea5p." <\/p>Các k\u1ebft qu\u1ea3 có th\u1ec3 c\u1ee7a bi\u1ebfn c\u1ed1 A là   SSSS.<\/p>Suy ra  n(A) = 1.<\/p>Do \u0111ó xác su\u1ea5t c\u1ee7a bi\u1ebfn c\u1ed1 A là  $P(A) = \\dfrac{n(A)}{n(\\Omega)}=\\dfrac{1}{16}$<\/span> .<\/p>Ch\u1ecdn   C.<\/strong> $\\dfrac{1}{16}$<\/span>.<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-09-28 01:26:04","option_type":"math","len":0},{"id":"7385","mon_id":"1158767","chapter_id":"1158895","post_id":"6714","question":"Gieo m\u1ed9t con xúc x\u1eafc hai l\u1ea7n. Xác su\u1ea5t \u0111\u1ec3 ít nh\u1ea5t m\u1ed9t l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t sáu ch\u1ea5m là<\/p>","options":["A.<\/strong> $\\dfrac{12}{36}$<\/span>","B.<\/strong> $\\dfrac{11}{36}$<\/span>","C.<\/strong> $\\dfrac{6}{36}$<\/span>","D.<\/strong> $\\dfrac{8}{36}$<\/span>"],"correct":"2","level":"1","hint":"","answer":"S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a không gian m\u1eabu là  $n(\\Omega)$<\/span> = 6.6 = 36.<\/p>G\u1ecdi A là bi\u1ebfn c\u1ed1 "Có ít nh\u1ea5t m\u1ed9t l\u1ea7n xu\u1ea5t hi\u1ec7n m\u1eb7t sáu ch\u1ea5m".<\/p>Suy ra  $\\overline{A}$<\/span> là bi\u1ebfn c\u1ed1 "C\u1ea3 hai l\u1ea7n \u0111\u1ec1u không xu\u1ea5t hi\u1ec7n m\u1eb7t sáu ch\u1ea5m".<\/p>Suy ra  $n(\\overline{A})$<\/span> = 5.5 = 25.<\/p>⇒ $n(A)=n(\\Omega)-n(\\overline{A}) = 36 - 25 = 11$<\/span> .<\/p>Do \u0111ó xác su\u1ea5t c\u1ee7a bi\u1ebfn c\u1ed1 A là  $P(A) = \\dfrac{n(A)}{n(\\Omega)}=\\dfrac{11}{36}$<\/span> .<\/p>Ch\u1ecdn  B.<\/strong> $\\dfrac{11}{36}$<\/span> .<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-09-28 01:33:17","option_type":"math","len":0},{"id":"7386","mon_id":"1158767","chapter_id":"1158895","post_id":"6714","question":"Gieo m\u1ed9t con xúc s\u1eafc cân \u0111\u1ed1i \u0111\u1ed3ng ch\u1ea5t hai l\u1ea7n. Tính xác su\u1ea5t c\u1ee7a bi\u1ebfn c\u1ed1 có t\u1ed5ng s\u1ed1 ch\u1ea5m trong hai l\u1ea7n gieo b\u1eb1ng 8.<\/p>","options":["A.<\/strong> $\\dfrac{1}{6}$<\/span>","B.<\/strong> $\\dfrac{5}{36}$<\/span>","C.<\/strong> $\\dfrac{1}{9}$<\/span>","D.<\/strong> $\\dfrac{1}{2}$<\/span>"],"correct":"2","level":"1","hint":"","answer":"S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a không gian m\u1eabu là  $n(\\Omega)$<\/span> = 6.6 = 36.<\/p>G\u1ecdi A là bi\u1ebfn c\u1ed1 "T\u1ed5ng s\u1ed1 ch\u1ea5m trong hai l\u1ea7n gieo b\u1eb1ng 8". <\/p>Các k\u1ebft qu\u1ea3 có th\u1ec3 c\u1ee7a A là  (2; 6), (6; 2), (3; 5), (5; 3), (4; 4).<\/p>⇒ $n(A)=5$<\/span> .<\/p>Do \u0111ó xác su\u1ea5t c\u1ee7a bi\u1ebfn c\u1ed1 A là  $P(A) = \\dfrac{n(A)}{n(\\Omega)}=\\dfrac{5}{36}$<\/span> .<\/p>Ch\u1ecdn  B.<\/strong> $\\dfrac{5}{36}$<\/span> .<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2023-09-28 01:35:56","option_type":"math","len":0}]}