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Answered 2008-11-17 13:12:33
When two fair coins are tossed, you have the following possible outcomes:
HH, HT, TH, TT.
So, at most implies that you get either i) zero heads or ii) one head.
From the possible outcomes we see that 3 times we satisify the outcome.
Thus, probability of at most one head is 3/4.
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Related Questions
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