a Under what condition is n P r n P n r b Given that nPr n P n r k n P n , find an expression for k in terms of n and r ...

a The condition for nPr nPnr is when r n2 b nPr nPnr n rnr n nr nr n rnr n n ...

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 ⁿP_r > ⁿP_n-r?

b. Given that nPr × ⁿP_n-r = k × ⁿP_n, find an expression for k in terms of n and r.

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Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

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Question Posted: Sep 13, 2021 02:48 AM

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a. Under what condition is n P r > n P n-r ? b. Given that nPr

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Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

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