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On the set of positive rationals, a bina...

On the set of positive rationals, a binary operation `**` is defined by a `**` b = `(2ab)/(5)` If 2 `**` x= `3^(-1)`, then x =

A

`1/6`

B

`2/5`

C

`5/(12)`

D

`(125)/(48)`

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The correct Answer is:
D
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