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23 April, 02:44

How many ways can a committee of three people be selected from a group of 20?

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  1. 23 April, 06:28
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    120

    Step-by-step explanation:

    From 20, choose 3:

    ₂₀C₃ = 120

    Here we use combinations instead of permutations because the order doesn't matter.
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