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You flip a fair coin ten times.  What is the probability that it comes up heads at least seven times?

 Dec 5, 2019
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10 C 7  +  10 C 8  +  10 C 9  + 10 C 10 = 176 / 2^10 =11 / 64 =17.1875 %

 Dec 5, 2019

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