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about to only mathematics...

about to only mathematics

A

`""^(8)C_(4)`

B

`""^(8)C_(4)xx2^(4)`

C

`""^(6)C_(4) xx2^(4)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
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OBJECTIVE RD SHARMA ENGLISH-BINOMIAL THEOREM AND ITS APPLCIATIONS -Chapter Test
  1. In the expansion of (x^3-1/(x^2))^n ,n in N , if the sum of the coeff...

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  2. The coefficient of x^20 in the expansion of (1+x^2)^40.(x^2+2+1/x^2)^-...

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  3. about to only mathematics

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  4. The sum ""^(40)C(0) + ""^(40)C(1)+""^(40)C(2)+…+""^(40)C(20) is equal ...

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  5. If x is positive, the first negative term in the expansion of (1+x)^(2...

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  6. The numberof integral termsin the expansion of ( (3)-root(8)(5))^256 i...

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  7. Find the term independent of x in the expansion of (sqrt(x/3)+((sqrt3)...

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  8. If the coefficients of x^2 and x^3 in the expansion of (3 + ax)^(9) be...

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  9. If the integers r gt 1, n gt 2 and coefficients of (3r)th " and " (r +...

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  10. about to only mathematics

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  11. The coefficient of x^(5) in the expansion of (x +3)^(6),is

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  12. Coefficient of x^(n) in the expansion of ((1+x)^(n))/(1-x)

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  13. The sum of the rational terms in the expansion of (2^(1//5) + sqrt(...

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  14. The expression (sqrt(2x^2+1)+sqrt(2x^2-1))^6 + (2/(sqrt(2x^2+1)+sqrt(2...

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  15. If the sum of the coefficients of the first, second, and third terms ...

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  16. In the expansion of (1+x+x^3+x^4)^10, the coefficient of x^4 is ^40C4 ...

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  17. Find the coefficient of x^5 in the expansion of (1+x^2)^5(1+x)^4.

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  18. In the expansion of (x^3-1/(x^2))^n ,n in N , if the sum of the coeff...

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  19. sum(k=1)^ook(1-1/n)^(k-1)=>? a.n(n-1) b. n(n+1) c. n^2 d. (n+1)^2

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  20. The coefficient of x^(10) in the expansion of (1+x^2-x^3)^8 is 476 b. ...

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