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Help with Probability Question10

Algebra
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Three fair coins are tossed. What is the probability that at least one is a head? (Enter the probability as a fraction.)

Dec 3rd, 2014

The possibility that all the three coins are tails is (1/2)^3=1/8

So the probability of at least one is a head is 1-1/8=7/8

Dec 3rd, 2014

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Dec 3rd, 2014
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Dec 3rd, 2014
Dec 9th, 2016
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