II. Thông hiểu

Mỗi đồng xu có 2 mặt sấp (S) và ngửa (N). Gieo ngẫu nhiên 2 đồng xu thì không gian mẫu của phép thử có số phần tử là

A. 3 phần tử.

B. 6 phần tử.

C. 9 phần tử.

D. 12 phần tử.

A. 24.

B. 12.

C. 6.

D. 8.

A. 4.

B. 8.

C. 9.

D. 10.

A. 36.

B. 40.

C. 38.

D. 35.

A. \[\Omega = \{ (1;\,\,1);\,\,\left( {3;\,\,1} \right);\;\,\,\left( {1;\,\,2} \right);\,\,\left( {2;\,\,2} \right);\,\,\left( {3;\,\,2} \right);\,\,\;\left( {1;\,\,3} \right);\,\,\left( {2;\,\,3} \right);\,\,\left( {3;\,\,3} \right)\} \].

B. \[\Omega = \{ (1;\,\,1);\,\,\left( {2;\,\,1} \right);\,\,\left( {3;\,\,1} \right);\,\,\;\left( {1;\,\,2} \right);\,\,\left( {2;\,\,2} \right);\,\,\left( {3;\,\,2} \right);\;\,\,\left( {1;\,\,3} \right);\,\,\left( {2;\,\,3} \right);\,\,\left( {3;\,\,3} \right)\} \].

C. \[\Omega = \{ (1;\,\,1);\,\,\left( {2;\,\,1} \right);\,\,\left( {3;\,\,1} \right);\,\,\,\;\left( {1;\,\,4} \right);\,\,\left( {2;\,\,2} \right);\,\,\left( {3;\,\,2} \right);\,\,\left( {4;\,\,2} \right);\;\left( {1;\,\,3} \right);\,\,\left( {2;\,\,3} \right);\,\,\left( {3;\,\,3} \right)\} \].

D. \[\Omega = \{ \left( {2;\,\,1} \right);\,\,\left( {3;\,\,1} \right);\,\,\left( {4;\,\,1} \right);\,\,\;\left( {1;\,\,5} \right);\,\,\left( {2;\,\,2} \right);\,\,\left( {3;\,\,2} \right);\,\,\left( {4;\,\,2} \right);\,\,\;\left( {1;\,\,3} \right);\,\,\left( {2;\,\,3} \right);\,\,\left( {3;\,\,3} \right);\,\,\left( {4;\,\,3} \right)\} \].

A. \(\left\{ {{\rm{NN}}\,{\rm{;}}\,\,{\rm{NS}}\,{\rm{;}}\,\,{\rm{SN}}\,{\rm{;}}\,\,{\rm{SS}}} \right\}\).

B. \(\left\{ {{\rm{NNN}}\,{\rm{;}}\,\,{\rm{SSS}}\,{\rm{;}}\,\,{\rm{NNS}}\,{\rm{;}}\,\,{\rm{SSN}}\,{\rm{;}}\,\,{\rm{NSN}}\,{\rm{;}}\,\,{\rm{SNS}}} \right\}\).

C. \(\left\{ {{\rm{NNN}}\,{\rm{;}}\,\,{\rm{SSS}}\,{\rm{;}}\,\,{\rm{NNS}}\,{\rm{;}}\,\,{\rm{SSN}}\,{\rm{;}}\,\,{\rm{NSN}}\,{\rm{;}}\,\,{\rm{SNS}}\,{\rm{;}}\,\,{\rm{NSS}}\,{\rm{;}}\,\,{\rm{SNN}}} \right\}\).

D. \(\left\{ {{\rm{NNN}}\,{\rm{;}}\,\,{\rm{SSS}}\,{\rm{;}}\,\,{\rm{NNS}}\,{\rm{;}}\,\,{\rm{SSN}}\,{\rm{;}}\,\,{\rm{NSS}}\,{\rm{;}}\,\,{\rm{SNN}}} \right\}\).