Q22:
When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?
答案: 1/4 哪位帮忙讲一下思路。 多谢! (为什么不是1/8 )
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因為有正反兩種可能,,
1/8*2=1/4
以前讨论过的。
如beauty所说
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