SOLUTION: Simplify the formula nPr when r= 0. Explain why this result makes sense. Would appreciate help.

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Question 450505: Simplify the formula nPr when r= 0. Explain why this result makes sense.
Would appreciate help.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
There is one way to choose zero people out of a group of n students where order matters (simply, do not choose anyone. This is similar to being able to choose zero condiments on a hamburger when you are offered n options). Here, nPr = 1 when r = 0.