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CENGAGE ENGLISH-PERMUTATIONS AND COMBINATIONS-All Questions
- 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 rxxr !dot
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- Find the exponent of 80 in 200!.
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- Prove that .^(n-1) Pr+r .^(n-1) P(r-1) = .^nPr
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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 nP5=20nP3 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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- A delegation of four students is to be selected from al total of 12 ...
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- In a conference 10 speakers are present. If S1 wants to speak before S...
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- Five boys and five girls sit alternately around a round table. In how ...
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- Find the number of ways in which A A A B B B can be places in the squa...
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- A regular polygon of 10 sides is constructed. In how many way can 3...
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- In ;a plane, there are 5 straight lines which will pass through a give...
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- If ^15 C(3r):^(15)C(r+1)=11 :3 , find the value of rdot
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- If the ratio ^2n C3:^n C3 is equal to 11:1 find ndot
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- There are n married couples at a party. Each person shakes hand with e...
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