a. Under what condition is n P r > n P n-r ? b. Given that nPr
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a. Under what condition is nPr > nPn-r?
b. Given that nPr × nPn-r = k × nPn, find an expression for k in terms of n and r.
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a The condition for nPr nPnr is when r n2 b nPr nPnr n rnr n nr nr n rnr n n...View the full answer
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Related Book For
Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook
ISBN: 9781108407304
1st Edition
Authors: Dean Chalmers, Julian Gilbey
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