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Suppose we want to choose 5 letters, without replacement, from 15 distinct letters.
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Suppose we want to choose 5 letters, without replacement, from 15 distinct letters.

User Djskinner
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order \: does \: not \:matter \\ sample \: space = 15 \: letters \\ no \: repetition\\ P(A) = 15C5 = 3003 \: ways

User Razzed
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