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08-05-2017
Mathematics

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A fair coin is tossed 5 times. what is the probability that it lands tails up exactly 3 times?

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mreijepatmat mreijepatmat

10-05-2017

p(tail) =1/2 p( head) =1/2

5C3(1/2)^3 x (1/2)^2 = 0.313

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