Question

抓乒乓球概率求双色乒乓球概率：如题：5个白色,5个黄色,随机抽5个,求0:5\1:4 \2:3\3:2\4:1\5:0\

Answer 1

0:5的概率=C(5,5)/C(10,5)=1/252.

1:4的概率=C(5,1)*C(5,4)/C(10,5)=25/252.

2:3的概率=C(5,2)*C(5,3)/C(10,5)=25/63.

3:2的概率=C(5,3)*C(5,2)/C(10,5)=25/63.

4:1的概率=C(5,4)*C(5,1)/C(10,5)=25/252.

5:0的概率=C(5,5)/C(10,5)=1/252.