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If the coefficients of x^2 and x^3 in th...

If the coefficients of `x^2 and x^3` in the expansion of `(3 + ax)^(9)` be same, then the value of `a` is

A

`3/(7)`

B

`7/(9)`

C

`9/(7)`

D

`7/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
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