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If the coefficient of x in (x^2 +k/x)^5...

If the coefficient of x in `(x^2 +k/x)^5` is 270, then k=

A

3

B

`-3`

C

9

D

`-9`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The coefficient of x^(n) , where n = 3k and n II 3k in the expansion of log (1 + x + x^(2)) is equal to

    A
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    B
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    D
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    A
    1
    B
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    C
    `-3`
    D
    any non-zero number

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