Which expression represents the number of possible permutations of n items taken r at a time?
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Mathematics, 27.05.2020 23:06 592400014353
Which expression represents the number of possible permutations of n items taken r at a time?
(17-)!!
(n-1)!
(n-n!
n!
(n-r)!r!
n!
Answers: 3
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