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There are 20 persons, among whom two are...

There are 20 persons, among whom two are brothers. Find the number of arrangements of these persons in a row.

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A N EXCEL PUBLICATION-PERMUTATIONS AND COMBINATIONS-QUESTION BANK
  1. Suppose that 4 prizes are distributed among 5 students Find the number...

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  2. Suppose that 4 prizes are distributed among 5 students Find the number...

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  3. There are 20 persons, among whom two are brothers. Find the number of ...

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  4. There are 20 persons, among whom two are brothers. Find the number of ...

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  5. There are 20 persons, among whom two are brothers. Find the number of ...

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  6. Suppose that 5 persons A, B, C, D and E sit around a circular table In...

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  7. Suppose that 5 persons A, B, C, D and E sit around a circular table In...

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  8. 10 persons are invited for a party In how many ways can they and the ...

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  9. 10 persons are invited for a party. In how many ways will two particu...

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  10. Evaluate the following ^14C3

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  11. Evaluate the following ^12C10

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  12. Evaluate the following ^(n+1)Cn

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  13. If ^nC10=^nC12 find ^23Cn

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  14. If ^npr=720 and ^nCr=120 find r

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  15. It was found at a certain dinner meeting that after every member had s...

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  16. In how many ways a committee of 5 members can be selected from 6 men a...

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  17. If m parallel lines in plane are intersected by a family of n parallel...

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  18. In how many ways can a cricket team of 11 of players be selected from ...

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  19. In how many ways can a cricket team of eleven be chosen out of a batch...

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  20. In how many ways can a cricket team of eleven be chosen out of a batch...

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