sumaya771 sumaya771

01-05-2020
Mathematics

contestada

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

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salatulmaghrib salatulmaghrib

01-05-2020

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

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Аноним Аноним

01-05-2020

1.

21- 17 = 4

only 1 group

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