Question

How many permutations are possible for 13 objects taken 6 at a time?

Answer 1

1,235,520

Explanation:

13P6 = 13!/(13-6)! = 13·12·11·10·9·8 = 1,235,520

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There are 13 ways to choose the first object, 12 ways to choose the second, 11 ways to choose the third, and so on. The 6th object can be chosen 8 ways.

The total number of permutations is the product of all these ways:

13·12·11·10·9·8 = 1,235,520