You have a set of 21 songs. How many different groups of 17 could you make?

Question

You have a set of 21 songs. How many different groups of 17 could you make?

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Skylar 2 weeks 2021-11-18T14:02:45+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-11-18T14:03:59+00:00

    1.

    21- 17 = 4

    only 1 group

    0
    2021-11-18T14:04:39+00:00

    C(21,17) = 21*20*19*18/4*3*2 = 215460

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