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In expansion of (x+a)^(5), T(2):T(3)=1:3...

In expansion of `(x+a)^(5), T_(2):T_(3)=1:3`, then `x:a` is equal to

A

1 : 2

B

2 : 1

C

2 : 3

D

3 : 2

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The correct Answer is:
3
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AAKASH INSTITUTE-BINOMIAL THEOREM-Assignment (section-A)
  1. In the expansion of (3+x/2)^(n) the coefficients of x^(7) and x^(8) ar...

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  2. sqrt(5){(sqrt(5)+1)^(50)-(sqrt(5)-1)^(50)}

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  3. In expansion of (x+a)^(5), T(2):T(3)=1:3, then x:a is equal to

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  4. If the coefficient of x^7 in (ax^2+1/(bx))^11 is equal to the coeffici...

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  5. The middle term in the expansioin of (1+x)^(2n) is

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  6. Cofficient of x^(12) in the expansion of (1+x^(2))^50(x+1/x)^(-10)

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  7. The number of terms in expansion of (x^(2)+18x+81)^(15) is

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  8. The term independent of x in the expanion of (root(6)(x)-(2)/(root(3)(...

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  9. The middle terms in the expansion of (1+x)^(2n+1) is (are)

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  10. (1.003)^(4) is nearby equal to

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  11. The nubmber of non - zeroes terns in the expansion of (1+sqrt(5))^(6)+...

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  12. The number of non -zeroes terms in the expansion of (sqrt(7)+1)^(75)-(...

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  13. The number of terms in the expansion if (a+b+c)^(12) is

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  14. Two consecutive terms in the expansion of (3+2x)^74 have equal coeffic...

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  15. If the coefficients of rth, (r+ 1)th and (r + 2)th terms in the expa...

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  16. Cofficient of x^(3)y^(10)z^(7) in expansion of (xy+yz)^(10) is

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  17. The ratio of coefficients x^(3) and x^(4) in the expansion of (1+x)^(1...

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  18. Given positive integers rgt1,ngt2 and the cofficients of (3r)^(th ) an...

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  19. Sum of all the digits of the coefficient of x^(5) in the expansion of ...

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  20. If (r+1)^(th) term in the expasnion of (a^(3)/3-2/a^(2))^(10) contains...

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