SOLUTION: Two coins are tossed. Find the probability that both coins turn up heads given that at least one coin turns up heads.

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Question 1033657: Two coins are tossed. Find the probability that both coins turn up heads given that at least one coin turns up heads.
Answer by Alan3354(69443) About Me  (Show Source):
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Two coins are tossed. Find the probability that both coins turn up heads given that at least one coin turns up heads.
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There are 4 possibilities:
H H
H T
T H
T T
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3 possibilities have at least 1 Head.
H H --> 1/3