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Let f: (e, oo) -> R be defined by f(x) =...

Let `f: (e, oo) -> R` be defined by `f(x) =ln(ln(In x))`, then

A

`f` is one one but not onto

B

`f` is onto but not one-one

C

`f` is one-one and onto

D

`f` is neither one-one nor onto

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The correct Answer is:
C
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