SOLUTION: I tried to do it myself. Can you please tell me if this is correct? If not, can you help me? The 16 graduating seniors at a small high school are ranked according to their grade-p

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Question 139740: I tried to do it myself. Can you please tell me if this is correct? If not, can you help me?
The 16 graduating seniors at a small high school are ranked according to their grade-point averages. Assuming there are no ties, what expression correctly shows the number of permutations of the seniors selected 5 at a time?
This is what I came up with.
P(16,5)=
16!
______
(16-5)!

Answer by solver91311(12126) About Me  (Show Source):
You can put this solution on YOUR website!
Yep. That's right. Now let me show you a calculation shortcut.

16%21%2F%2816-5%29%21=16%21%2F11%21=%2816%2A15%2A14%2A13%2A12%2A11%21%29%2F11%21=%2816%2A15%2A14%2A13%2A12%2Across%2811%21%29%29%2Fcross%2811%21%29=16%2A15%2A14%2A13%2A12