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Mathematics
Probability and Combinatorics
Permutations
P(8,4)/P(4,1)
1 answer
P(8,4) = 8!/(8-4)! = 8!/4! = (8x7x6x5)
P(4,1) = 4
P(8,4)/P(4,1) = (8x7x6x5)/4 = 1680
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