试题与答案

一个口袋中有8个黑球和若干个白球,(不许将球倒出来数)从口袋中随机摸出一球,记下

题型:解答题

题目:

一个口袋中有8个黑球和若干个白球,(不许将球倒出来数)从口袋中随机摸出一球,记下其颜色,再把它放回口袋中,不断重复上述过程,如果共摸了200次,其中有60次摸到黑球,那么请你估计口袋中大约有多少个白球?

答案:

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