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Engineering, 09.02.2021 14:00 emeraldchest99

seven people, designated as a, b, c, d, e, f , and g are arranged in linear order. assuming that each possible order is equally likely, what is the probability that (a) there is exactly one person between a and b? (b) there are exactly two people between a and b? (c) there are exactly three people between a and b?

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