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If a permutation is chosen at random what is the probability that it begins with at least two A's

User Oneself
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1 Answer

8 votes

Answer:

Starting with AT LEAST 2 A's means starting with 3 A's, or starting with 2 A's with some different letter third.

P(AAA...) = (3/9)(2/8)(1/7) = 1/84

Explanation:

User Mohammad Fatemi
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