What is the probability that when a fair coin is flipped 25 times, there will be exactly five heads?

For exactly five heads in 25 flips, choose which 5 flips are heads: there are C(25,5) = 53,130 ways. Each sequence of 25 fair coin flips has probability 1/2^25, so the probability is 53,130 ÷ 33,554,432 ≈ 0.00158. The correct choice is 0.00158.

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