SOLUTION: Find the indicated values.
(a) 9P2
(b) 9C2
Algebra.Com
Question 718031: Find the indicated values.
(a) 9P2
(b) 9C2
Answer by gingertea(7) (Show Source): You can put this solution on YOUR website!
nPr=n! / (n-r)!
nCr=n!/(n-r)!r!
therefore,9P2= 9!/(9-2)!=72
9C2=9!/(9-2)!2!=36
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