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Sum of four digit numbers formed with 2,...

Sum of four digit numbers formed with 2,3,4,5 using each digit any number of times is

A

`4xx1111xx64`

B

`14xx1111xx64`

C

`14xx1111xx16`

D

`4xx1111xx64`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-II
  1. The sum of the digits in the unit place of all the numbers formed with...

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  2. The sum of the numbers formed by taking all the digits at a time from ...

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  3. Sum of four digit numbers formed with 2,3,4,5 using each digit any num...

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  4. Find the sum of all 4 digited numbers that can be formed using the dig...

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  5. Find the sum of all 4 digited numbers that can be formed using the dig...

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  6. The sum of the digits in the unit place of all the numbers formed with...

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  7. f:AtoA,A={a(1),a(2),a(3),a(4),a(5)}, the number of one one functions ...

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  8. The number of ways in which 4 letters can be put in 4 addressed envelo...

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  9. If the 4 letter words formed by using the letters of the word EQUATION...

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  10. Assertion (A): The number of ways in which 5 boys and 5 girls can sit ...

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  11. Assertion (A) : The number of ways in which 6 persons can sit around a...

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  12. sum(r=0)^(n)(P(r))/(r!) is equal to

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  13. If ""^(n)P(r)=""^(n)P((r+1))and ""^(n)C(r) = ""^(n)C(r-1), then (n,...

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  14. IF ""^(n) P(r)=720,""^(n)C(r)=120then (n,r)=

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  15. ""^(2n)C(n+1)+2. ""^(2n)C(n) + ""^(2n) C(n-1) =

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  16. the value of ""^50C(4) + underset( r=1) overset( 6 ) sum ""^(56...

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  17. sum( r=0 )^ ( 10) ( 40 -r)C (5)=

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  18. If ""^(n-1)C(3)+""^(n-1)C(4)gt""^(n)C(3), then

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  19. If ""^(n)C(4),""^(n)C(5),""^(n)C(6) are in A.P., then the value of n i...

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  20. If ""^(n)C(r-1)=36,""^(n)C(r)=84 and ""^(n)C(r+1)=126, then r is equal...

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