SOLUTION: If nPr= 55400 and nCr=462, determine r.

SOLUTION: If nPr= 55400 and nCr=462, determine r.

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Question 436495: If nPr= 55400 and nCr=462, determine r.
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
I think you may have typoed and put 55400 instead of 55440 (simply because 55400/462 is not an integer, as you will see).

For this problem, we can note that . Since r! = 120, r = 5.
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