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MAHAVEER PUBLICATION-PERMUTATIONS AND COMBINATIONS -QUESTION BANK
- How many different five digit numbers can beformed from the digit 1,2,...
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- How many different five digit numbers can beformed from the digit 1,2,...
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- Find the value : 5! - 3!
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- Find the value : (7!)/(4!)
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- Find the value : 3! xx (7!)/(5!)
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- If n is a natural number then show that n! + (n+1)! = (n+2)n!
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- If n is a natural number then show that 1.3.5.7…..(2n-1) = ((2n)!)/(2^...
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- If ""^(56)P(r+ 6):""^(54)P(r+3) = 30800, find ""^(r)P(2).
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- Prove that ^n Pr-5^n Pr+r^(n-1)P(r2-1)dot
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- How many 9 letters words can be formed using the letters of the word "...
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- A child has four pocket and three marbles. In how many ways can the ch...
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- Find the value : "^6C3
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- Find the value : "^5C4 + ^7C4
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- Find the value : "(^7C3)/(^3C2)
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- If .^(n)C(r-1)=36, .^(n)C(r)=84 and .^(n)C(r+1)=126, find n and r.
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- How many ways 3 students can be selected from 50 students ?
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- In how many ways can 11 players be selected from 14 players if (i) a...
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- In how many ways can 11 players be selected from 14 players if (i) a...
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- Find the number of 4 letter words that can be formed from the letters ...
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- If "^nP3 = 336 find "^nC3
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