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Find the middle term in the expansion of...

Find the middle term in the expansion of : `(2a x-b/(x^2))^(12)`

A

`"^12C_7``((2ab)/x)^7`

B

`"^12C_5``((2ab)/x)^5`

C

`"^12C_6``((2ab)/x)^6`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Given
`(2 a x-frac{b}{x^{2}})^{12}`
`n` is an even number.
Middle term `=(frac{12}{2}+1)^{ {th }}=7^{ th }` term
...
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