sumaya771 sumaya771
  • 01-05-2020
  • Mathematics
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You have a set of 21 songs. How many different groups of 17 could you make?

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salatulmaghrib
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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