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Mathematics, 15.03.2022 14:30 lilblackbird4

Suppose we want to choose 7 letters, without replacement, from 9 distinct letters. (a) If the order of the choices is not relevant, how many ways can this be done?

(b) If the order of the choices is relevant, how many ways can this be done?

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Suppose we want to choose 7 letters, without replacement, from 9 distinct letters. (a) If the orde...
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