题库搜索>问题求解PS-13423
If a certain coin is flipped, the probability that the coin will land heads up is 1/2. If the coin is flipped 5 times, what is the probability that it will land heads up on the first 3 flips and not on the last 2 flips?
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硬币抛5次，问前三次正面朝上 后两次不是的概率是多少 因为每一次都是确定的 所以1/2*1/2*1/2*1/2*1/2=1/32
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概率是一样的，概率相乘就是了
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2018-05-17 01:53:01
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