|
- 精华
- 0
- 积分
- 740
- 经验
- 740 点
- 威望
- 73 点
- 金钱
- 73 ￥
- 魅力
- 73
|
数学概率请教NNM
Q37:
A box contains exactly 24 balls, of which 12 are red and 12 are blue. If two balls are to be picked from this box at random and without replacement, what is the probability that both balls will be red?
答案是 11/46
有没有知道什么做？ 谢谢谢谢谢谢 |
|
