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CENGAGE PUBLICATION-PERMUTATIONS AND COMBINATIONS-All Questions
- In how many ways can four people, each throwing a dice once, make a su...
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- Find n ,if(n+1)! =12xx(n-1)!dot
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- Three numbers are in AP. If theirsum is 27 and their product is 648. F...
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- Find the total number of integers 'n' such that 2 le n le 2000 and ...
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- The number of polynomials of the form x^3 + ax^2 + bx + c which are di...
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- Find the number of diagonals in a polygon with n sides.
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- Find the total number of n -digit number (n >1) having property that n...
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- Prove that (n !)^2 < n^n n! < (2n)!, for all positive integers n.
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- Find the sum of the series sum(r=1)^n r/((r+1) !)dot
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- Find the exponent of 80 in 200!.
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- Prove that .^nPr = ^(n-1)Pr + r^(n-1)P(r-1)
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- How many ways are there to seat n married couples (ngeq3) around a tab...
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- A round-table conference is to be held among 20 delegates belonging fr...
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- How many numbers can be formed from the digits 1, 2, 3, 4 when repetit...
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- Find the three-digit odd numbers that can be formed by using the digit...
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- If ^ n P5=20 ^nP3 find the value of n
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- Find the total number of ways of selecting five letters from the word ...
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- Passengers are to travel by a double decked bus which can accommodate ...
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- Simplify the following and express it in the form (a+ib): (3+4i)(2-3i...
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- In a conference 10 speakers are present. If S1 wants to speak before S...
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