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GAIC Math 2024 Problem 127

  • Answer

Zheng flips an unfair coin 5 times. If the probability of getting exactly 1 head is equal to the probability of getting exactly 2 heads and is nonzero, then the probability of getting exactly 3 heads is ____.

Dataset text MathOdyssey. Open licence.

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40243\frac{40}{243}.

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