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25 December, 10:51

18 students are going on a field trip the bus can fit 14 so four of them will have to ride in a car and how many ways can we choose the four students who must ride in the car

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  1. 25 December, 11:15
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    Number of ways we can choose the four students who must ride in the car = 3060 ways

    Step-by-step explanation:

    This is a combination question.

    The number of selections of "r" objects from the given "n" objects is denoted by;

    C (n, r), and is given by;

    C (n, r) = n!/[r! (n - r) !]

    In this question, n = 18 and r = 4

    Thus;

    C (18, 4) = 18!/[4! (18 - 4) !]

    C (18,4) = 3060

    Number of ways we can choose the four students who must ride in the car = 3060 ways
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