Mathematics
Mathematics, 31.01.2021 15:10, livie225

A boy chooses 7 balls at random from n balls numbered 1 to n. If the probability that no two of the drawn balls have consecutive numbers equals the probability of exactly one pair of consecutive numbers in the chosen balls, find n. Please Help

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A boy chooses 7 balls at random from n balls numbered 1 to n. If the probability that no two of the...

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