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The number of ways of dividing 10 bo...

The number of ways of dividing 10 books into 3 group of 5,3,2, books respectively is

A

`(8!)/(6!5!4!)`

B

`(9!)/(5!4!3!)`

C

`(10!)/(5!3!2!)`

D

`(12!)/(7!5!2!)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PERMUTATIONS & COMBINATIONS-EXERCISE-I
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  2. If ""^(n)C(r) denotes the number of combinations of n things taken r t...

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  3. If ""^(8)C(3)+""^((n+2))C(4)=""^(9)C(4), then n is

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  4. IF C (2n, 3) : C (n,2) = 12 : 1, then n=

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  5. The number of ways in which a team of 6 players can be chosen from 11 ...

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  6. The number of diagonals in a polygon of 10 sides is

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  7. If these are 8 points on a circle, then number of different line seg...

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  8. If these are 8 points on a circle, Number of triangles formed by joi...

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  9. There are 10 parallel lines intersected by a family of 5 parallel line...

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  10. The number of rectangles formed in a chess board is

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  11. Assuming the balls to be identical except for difference in colours, t...

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  12. Numbar of different sums that can be formed with half rupee coin, a tw...

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  13. a man has 4 friends , in how many ways can he inivite one or ...

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  14. The number of divisors of 7! is

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  15. The sum of divisors of 2 ^5 3^4 5^3 is

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  16. The number of ways can 9 things be divided equally among 3 persons is

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  17. The number of ways in which 9 things can be divided into 3 equal group...

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  18. In how many ways can 52 cards be divided among 4 players so t...

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  19. The number of ways of awaring 9 scholarships among three students so t...

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  20. The number of ways of dividing 10 books into 3 group of 5,3,2,...

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