SOLUTION: NPR = 336 and ncr = 56 Find r and n

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Question 1033102: NPR = 336 and ncr = 56 Find r and n
Answer by fractalier(6550) About Me  (Show Source):
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Since they differ by r!, we can divide to find 336/56 = 6 = 3!.
That means r = 3.
By inspection 8x7x6 = 336, so n = 8.
8 chosen 3 at a time is 56.