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- How many different signals can be given using any number of flags from...
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- A student is allowed to select at most n books from a collection of (2...
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- In how many ways can 6 persons stand in a queue?
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- In an election, the number of candidates is one greater than the per...
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- Out of 10 white, 9 black, and 7 red balls, find the number of ways in ...
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- Two players P1a n dP2 play a series of 2n games. Each game can re...
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- Find the number of ways in which 8 different flowered can be strung to...
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- Ten IIT and 2 DCE students sit in a row. The number of ways in whic...
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- If "^(2n+1)P(n-1):^(2n-1)Pn=3:5, then find the value of n.
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- A team of four students is to be selected from a total of 12 studen...
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- If "^9P5+5*^9P4=^(10)Pr , find the value of r.
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- There were two women participating in a chess tournament. Every par...
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- Seven athletes are participating in a race. In how many ways can the ...
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- Two teams are to play a series of five matches between them. A matc...
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- Prove that if rlt=slt=n ,t h e n^n Ps is divisible by ^n Pr .
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- The number of even divisor of the number N=12600=2^3 3^2 5^2 7 is a. ...
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- Find the number of zeros at the end of 130!.
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- A candidate is required to answer 6 out of 10 questions, which are ...
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- Find the exponent of 3 in 100!
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- Number of ways in which two persons A and B select objects from two ...
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