SOLUTION: If a coin is flipped twice, what is the probability that it will land heads at least once?

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Question 298997: If a coin is flipped twice, what is the probability that it will land heads at
least once?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
If a coin is flipped twice, what is the probability that it will land heads at
least once?
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P(at least one) = 1 - P(no heads)
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= 1 - (1/2)^2
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= 1 - 1/4
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= 3/4
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Cheers,
Stan H.