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If the 4 th term in the expansion of (a ...

If the 4 th term in the expansion of `(a x + (1)/(x))^(n)` is
(5)/(2)`, for all x `in` R then the values of a and n are respectively

A

`5, 1/2`

B

`6,-1//2`

C

`3,1//3`

D

`6,1//2`

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The correct Answer is:
D
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