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CENGAGE ENGLISH-PERMUTATIONS AND COMBINATIONS-All Questions
- Prove that (n !)! is divisible by (n !)^((n-1)!)
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- Column I, Column II Number of straight lines joining any two of ...
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- If the number of selections of 6 different letters that can be made...
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- If n1 and n2 are five-digit numbers, find the total number of ways...
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- If n1a n dn2 are five-digit numbers, find the total number of ways ...
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- If a denotes the number of permutations of (x+2) things taken all at a...
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- If n Pr=^n P(r+1) and n Cr=^n C(r-1,) then the value of (n+r) i...
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- Let n be the number of ways in which 5 boys and 5 girls can stand in a...
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- (i) In how many ways can a pack of 52 cards be divided equally amon...
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- Let f(n)=sum(r=0)^nsum(k=r)^n(k r)dot Find the total number of divis...
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- True or false: The product of any r consecutive natural numbers is al...
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- Statement 1: Number of zeros at the end of 50! is equal to 12. Stateme...
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- Using permutation or otherwise, prove that (n^2)!/(n!)^n is an integer...
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- A number of 18 guests have to be seated, half on each side of a lon...
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- Ten persons numbered 1, 2,.....,10 play a chess tournament, each playe...
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- A box contains 2 white balls, 3 black balls & 4 red balls. In how many...
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- A man has three friends. The number of ways he can invite one frien...
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- A forecast is to be made of the results of five cricket matches, eac...
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- Number of points of intersection of n straight lines if n satisfies ...
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- Number of shortest ways in which we can reach from the point (0, 0, 0)...
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