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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-II
- Sum of four digit numbers formed with 2,3,4,5 using each digit any num...
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- Find the sum of all 4 digited numbers that can be formed using the dig...
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- Find the sum of all 4 digited numbers that can be formed using the dig...
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- The sum of the digits in the unit place of all the numbers formed with...
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- f:AtoA,A={a(1),a(2),a(3),a(4),a(5)}, the number of one one functions ...
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- The number of ways in which 4 letters can be put in 4 addressed envelo...
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- If the 4 letter words formed by using the letters of the word EQUATION...
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- Assertion (A): The number of ways in which 5 boys and 5 girls can sit ...
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- Assertion (A) : The number of ways in which 6 persons can sit around a...
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- sum(r=0)^(n)(P(r))/(r!) is equal to
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- If ""^(n)P(r)=""^(n)P((r+1))and ""^(n)C(r) = ""^(n)C(r-1), then (n,...
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- IF ""^(n) P(r)=720,""^(n)C(r)=120then (n,r)=
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- ""^(2n)C(n+1)+2. ""^(2n)C(n) + ""^(2n) C(n-1) =
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- the value of ""^50C(4) + underset( r=1) overset( 6 ) sum ""^(56...
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- sum( r=0 )^ ( 10) ( 40 -r)C (5)=
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- If ""^(n-1)C(3)+""^(n-1)C(4)gt""^(n)C(3), then
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- If ""^(n)C(4),""^(n)C(5),""^(n)C(6) are in A.P., then the value of n i...
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- If ""^(n)C(r-1)=36,""^(n)C(r)=84 and ""^(n)C(r+1)=126, then r is equal...
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- The value of 2^(n)n!(1.3.5.....(2n-1)) is
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- If a(n)=sum(r=0)^(n)(1)/(""^(n)C(r)) then sum(r=0)^(n)(r)/(""^(n)C(r))...
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