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If the sum of odd terms and the sum of even terms in `(x + a)^n` are p and q respectively then 4pq =

A

`(x+a)^(2n) - (x -a )^(2n)`

B

`(x^2 -a^2)^(2n) + (x + a)^(2n)`

C

`(x^2 - a^2)^n - (x - a)^(2n)`

D

`(x^2 +a^2)^n + (x - a)^(2n)`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-BINOMIAL THEOREM-PRACTICE EXERCISE
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  8. If the coefficients of 2nd, 3rd, 4th terms of (1+x)^n are in A.P. then...

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  9. If the coefficients of 2nd , 3rd and 4th terms of the expansion of (1+...

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  10. If the coefficients of 3rd, 4th , 5th terms in (1+x)^(2n) are A.P. the...

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  11. If the coefficients of r,(r +1 ),(r+2) terms in (1+x)^14 are in A.P. t...

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  12. If three successive coefficients in (1+x)^n are 6,15,20 then n =

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  13. If a1,a2,a3,a4 are the coefficients of 2nd, 3rd, 4th and 5th terms of ...

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  14. If a,b,c,d are conseentive binomial coefficients of (1+x)^n then (a+b)...

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  15. Coefficient of x^5 in (1+x +x^2 +x^3)^10 is

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  16. The coefficient of x^4 in the expansion of (1+x-2x^2)^7 is

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  17. Binomial coefficients which are in decreasing order are

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  18. Coefficient of x^3 in 1+(1+x) +(1 +x)^2 +…..+(1+x)^n is

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  19. Sum of the coefficients of (1+2x-4x^2)^(2003)

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  20. Sum of coefficients of terms of even powers of x in (1 + x + x^2 + x^...

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