Thursday
July 2, 2015

Homework Help: Data management

Posted by Jane on Thursday, October 27, 2011 at 9:55pm.

1)SOLVE:
a) 2nP3 = 2(nP4)
b)6(n+1P2) = 3nP2

2) If (nC12 = (nC8), find (nC17) and (22Cn)

3)simplify.
a) n(squared) (n-2)! - n(n-2)! / n!
b) (nC2) - (nCn-2)

4)If nPr - 506 and (nCr_ = 253, find n and r.

5) If (28C2r)/(24C2r-4) = 225/11, find r.

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