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If ""^nP4=5 ""^nP3, then n is :...

If `""^nP_4=5 ""^nP_3`, then n is :

A

8

B

6

C

7

D

5

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MODERN PUBLICATION-BINOMIAL THEOREM-EXERCISE
  1. The value of ""^8P7 is

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  2. The value of ""^(15)C(11)+""^(15)C(10) is equal to

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  3. If ""^nP4=5 ""^nP3, then n is :

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  4. The value of ""^(15)C(11)+""^(15)C(10) is equal to

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  5. The number of straight lines that can be drawn out of 10 points of whi...

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  6. The number of diagonals that can be drawn by joining the vertices of a...

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  7. The number of divisors of the number 56 excluding 1 and 56 is :

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  8. The number of 3-digit odd numbers, by using the digits 1,2,3,4,5,6 whe...

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  9. There are 15 points in a plane, no three of which are in a st. line, e...

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  10. Number of triangles formed by joining 12 points, 7 of which are in the...

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  11. If 7 points out of 12 are in the same straight line, then the number o...

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  12. The total number of terms in the expansion of (x+y)^100+ (x-y)^100 aft...

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  13. The coefficient of x^17 in the expansion of : (x-1)(x-2)(x-3) ...... ...

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  14. Let Sp and Sq be the coefficients of x^p and x^q respectively in (1 + ...

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  15. Find the coefficient of x^5 in the expansion of (x+3)^6 is :

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  16. If x=1/3, then the greatest term in the expansion of (1+4x)^8 is the :

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  17. The middle term in the expansion of (1 + x)^(2n) is :

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  18. The term independent of x in (2x-1/(3x))^6 is :

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  19. The coefficient of the term independent of x in (2x-3/x)^6 is :

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  20. The fourth term in the binomial expansion of (x^2-1/x^3)^n is independ...

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