K people independently toss a coin n times. What is the probability that all K of them get the same number of heads?(adsbygoogle = window.adsbygoogle || []).push({});

(1) Find a formula for the probability in terms of K and n.

(2) Evaluate the probability for K = {5, 10, 20} and n = {4, 8, 16}

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# Coin toss

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