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The coefficient of a^8b^4c^9d^9 in (a b ...

The coefficient of `a^8b^4c^9d^9` in `(a b c+a b d+a c d d+b c d)^(10)` is `10 !` b. `(10 !)/(8!4!9!9!)` c. `2520` d. none of these

A

10!

B

`(10!)/(8!4!9!9!)`

C

2520

D

None of these

Text Solution

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The correct Answer is:
C
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FIITJEE-MATHEMATICS TIPS-ASSIGNMENT -OBJECTIVE
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  15. The term that is independent of x, in the expression ((3)/(2)x^(2)-(1)...

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  16. The value of a for which the equation x^3 + ax + 1 = 0 and x^4+ ax + ...

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  17. Let a(n)=(827^(n))/(n!) for n in N , then a(n) is greatest when

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  18. If x^(2)+xy+xz=18,y^(2)+yz+yx+12=0 and z^(2)+zx+zy=30, then (x+y+z)=

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  19. Consider the equation of the form x^(2)+px+q=0, then number of such eq...

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  20. The sum of the least and greates in absolute value of z which satisfie...

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