Suppose you are asked to choose three movies. If there are 20 different movies, in how many ways can

Discussion in 'Calculator Requests' started by math_celebrity, Sep 20, 2020.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    Suppose you are asked to choose three movies. If there are 20 different movies, in how many ways can the three movies be chosen?

    We want unique combinations, so we have 20 choose 3:

    We type 20C3 into our search engine and we get:
    20C3 = 1,140
     
    math_celebrity, Sep 20, 2020
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