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If a1,a2, a3,a4 are the coefficients of ...

If `a_1,a_2, a_3,a_4` are the coefficients of 2nd, 3rd, 4th and 5th terms of respectively in `(1+x)^n` then `(a_1)/(a_1+a_2)+(a_3)/(a_3+a_4)=`

A

`(a_2)/(a_2+a_3)`

B

`(2a_2)/(a_2+a_3)`

C

`(a_3)/(a_2+a_3)`

D

`(2a_3)/(a_2+a_3)`

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-BINOMIAL THEOREM-EXERCISE 1A (BINOMIAL THEOREM WITH INTEGRAL INDEX)
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  7. The coefficient of x^p in the expansion of (x^2+(1)/(x))^(2n) is

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  8. If T0, T1, T2, … Tn represent the terms in the expansion of (x+a)^n, t...

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  9. The expansion [x+(x^3-1)^(1//2)]^5+[x-(x^3-1)^(1//2)]^5 is a polynomia...

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  10. If (1)/(sqrt(4x+1)){(1+(sqrt(4x+1))/(2))^n-(1-(sqrt(4x+1))/(2))^n}=a0+...

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  18. The remainder left out when8^(2n)-(62)^(2n+1) is divided by 9 is

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  19. If (3+sqrt8)^n - I+F where In are positive integer , 0 lt F lt 1 then ...

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