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Find n, if overset(9) P5+ 5.overset(9) ...

Find `n`, if ` overset(9) P_5+ 5.overset(9) P_4= overset(10) P_n`

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Find the value of n such that (i) overset(n) P_5=42 overset(n) P_3, n gt4 (ii) (overset(n) P_4)/ (overset(n-1) P_4)=5/3,ngt-4

If n and r are positive integers such that. 2 le r le n , show that overset(n) C_r+2 overset(n) C_{r-1}+overset(n) C_(r-2)=overset(n+2) C_r

Find the magnitude of oversetrarra given by oversetrarra =(overset^^i+3overset^^j-2overset^^k)xx(-overset^^i+3overset^^k)

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  15. Prove that 33 ! is divisible by 2^(15) . What is the largest integer n...

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  16. Find n, if overset(9) P5+ 5.overset(9) P4= overset(10) Pn

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