Question

13 P 0 =?

Answer 1

A permutation of 13 objects taken zero at a time.

How many ways can you do that? @oldspice21

Answer 2

You could use the formula but you may have an intuitive idea.

Answer 3

Yeah, self explanatory... thanks!

Answer 4

Well, I don't know about that. But, how many ways can "none" be chosen?

If you don't see that, crank it out:

P(13,0) = 13!/(13-0)! = 13!/13! = ? @oldspice21

Answer 5

13!/13! = ?

Answer 6

1.. Thanks!

Answer 7

Yes. It is kind of weird but there is only one way not to choose any of the 13 and that is not to choose anything. It reminds me of the empty set being one of the subsets of a given set. Whatever.