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- If .^nPr = .^nP(r + 1) and .^nCr = .^nC(r-1) then the value of n + r...
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- A five digit number divisible by 3 is to be formed using the numerals ...
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- Find the number of number between 300 and 3000 that can be formed with...
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- A number of four different digits is formed with the help of the digit...
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- A number of four different digits is formed with the help of the digit...
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- A number of four different digits is formed with the help of the digit...
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- A number of four different digits is formed with the help of the digit...
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- A train is going from kolkata to Delhi stops at nine intermediate stat...
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- If ^nPr = ^nP(r + 1) and ^nCr = ^nC(r - 1) find the value of n and r.
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- Solve the inequality .^(n-1)C4 - .^(n -1)C3 - 5/4 .^(n-2)C2lt 0,n in ...
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- The letters of the word OUGHT are written in all possible order and th...
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- How many numbers of 5 digits can be made with the digits 0,1,2,3,4,5 w...
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- There are 2n guests at a dinner party. Supposing that the master and m...
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- n different things are arranged around a circle. In how many ways can ...
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- How many integers between 1 and 10,00,000 have the sum of the digits e...
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- Let Tn denotes the number of triangles which can be formed using the v...
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- If .^nc(r-1)=10,.^nc(r)=45 and .^nc(r+1)=120 then r equals
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- The total number of five digit numbers of different digits in which th...
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- The number of ways in which 7 persons can be seated at a round table i...
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- Number of divisors of the form 4n+2(nge0) of the integer 240 is
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