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1/(log(2)a) + 1/(log(4)a) + 1/(log(8)a)+...

`1/(log_(2)a) + 1/(log_(4)a) + 1/(log_(8)a)`+….. To n terms `=(n(n+1))/k`, then k is equal to:

A

`log_(2)a^(2)`

B

`log_(2)(a/2)`

C

`log_(a)2`

D

None of these

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The correct Answer is:
A
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