A sample of 3 is selected from 9 cards. How many permutation is possible? Show Work.
Formula for permutation is
nPr = n! / (n-r)!
So,
9P3 = 9! / (9 - 3)!
= 9! / 6!
= 9 * 8 * 7 * 6! / 6!
= 9 * 8 * 7
= 504
A sample of 3 is selected from 9 cards. How many permutation is possible? Show Work.
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How many permutations are there and show steps to how to get the
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