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If a denotes the number of permutati...

If a denotes the number of permutations of x+2 things taken all at a time , b be the number of permutations of x things taken 11 at a time and c the number of permutations of x -11 things taken all at a time such that a =182 bc , then the value of x is

A

15

B

12

C

10

D

18

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B
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1A (PERMUTATIONS )
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  2. the number of positive integers which can be formed by using an...

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  3. If a denotes the number of permutations of x+2 things taken a...

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  4. the number of 3 digited numbers that can be formed that can ...

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  5. The number of 4 letter words than can be formed using the lett...

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  6. The number of 5 letter that can be formed using the letters of ...

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  7. The number of 4 digited even number that can be formed using th...

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  8. The number of 5 digited numbers that can be formed using the ...

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  9. The number of 5 digited numbers that can be formed using the d...

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  10. The number of 4 digited numbers that can be formed using the d...

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  11. The total number of seven digit numbers so that the sum of dig...

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  12. Find the number of numbers less than 2000 that can be formed using the...

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  13. There are unlimited number of identical balls of four differen...

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  14. The number of numbers greater than 1000 but not greater than ...

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  15. An n- digit number is a positive number with exctly n digits ...

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  16. The number of quadratic expressions with the coefficients drawn ...

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  17. A three digit number n is such that the last two digits of it ...

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  18. Eight different letters of an alphabet are given . Words of f...

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  19. ten different letters of alphabet are given . Words with 5 lett...

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  20. The number of four letter words using the letters of the word ...

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