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5 choose 2 = ?
5 choose 2
10
ways to pick 2 from 5
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5 choose 2
evaluates to
10
.
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RELATED ANSWERS
5 permute 2
= 20
6 choose 2
= 15
52 choose 5
= 2,598,960
10 choose 3
= 120
49 choose 6
= 13,983,816
10 permute 3
= 720