A research group recruits 10 volunteers to try a new brand of tennis shoes. Only 5 volunteers will be selected to participate in the study.<

Question

A research group recruits 10 volunteers to try a new brand of tennis shoes. Only 5 volunteers will be selected to participate in the study.

How many ways can the research group select 5 participants? Enter your answer as a number, such as: 425

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Delilah 2 weeks 2021-09-15T11:33:22+00:00 2 Answers 0

Answers ( )

    0
    2021-09-15T11:34:35+00:00

    Answer:

    252

    Step-by-step explanation:

    correct answer on test

    0
    2021-09-15T11:34:50+00:00

    Answer:

    There are 253 ways to select 5 participants

    Step-by-step explanation:

    Total number of volunteers to try a new brand of tennis shoes = 10

    Number of volunteers to be selected = 5

    We are supposed to find number of ways the research group select 5 participants.

    We will use combination:

    Formula:^nC_r=\frac{n!}{r!(n-r)!}

    Substitute n = 10 and r = 5

    So,^{10}C_5=\frac{10!}{5!(10-5)!}

    ^{10}C_5=252

    Hence There are 253 ways to select 5 participants

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45:7+7-4:2-5:5*4+35:2 =? ( )