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

User Nareshkumar
by
7.6k points

2 Answers

3 votes
1.

21- 17 = 4

only 1 group
User Niall Sheridan
by
8.2k points
4 votes
C(21,17) = 21*20*19*18/4*3*2 = 215460
User Offler
by
8.3k points
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