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A N EXCEL PUBLICATION-PERMUTATIONS AND COMBINATIONS-QUESTION BANK
- Prove that ^"" nCr=^nC(n-r)
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- If ^nC10=^nC12 find ^23Cn
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- Find the value of ^10C4
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- Show that ^10C4=^9C(4)+^9C3
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- prove the result ^(n+1)Cr=^nC(r-1)+^nCr
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- Given that ^nCr=(n!)/(r!(n-r)!) What are the values of ^28C(2r) and ^2...
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- Given that ""^nCr=(n!)/(n!(n-r)!) if ""^28C(2r): ^24C(2r-4)=225:11 pr...
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- Prove that (""^nPr)/(""^nCr)=r!
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- If ^28pr=6^28Cr, prove that r = 3
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- If p(n,2)=272, find n
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- For the above n, if (n,r) =136, find r
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- Prove that (""^nCr)/(""^nC(r-1))=(n-r+1)/r
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- If (c(n,r))/(c(n,r+1))=1/2 and (c(n,r+1))/(c(n,r+2))=2/3, prove that ...
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- Prove that ""^nCr+^nC(r-1)=^(n+1)Cr
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- Prove that ""^nCr+4^nC(r-1)+6^(n)C(r-2)+4^nC(r-3)+^nC(r-4)=^(n+4)Cr
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- Find the value of 5!
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- If (n!)/((n-2)!)=56, find the value of n
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- Find the value of ""^6C2
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- If ""^nC14=^nC20 find the values of ""^nC28 and ""^nC32
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- In how many ways can a cricket team of 11 of players be selected from ...
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