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Which of the following conditions imply ...

Which of the following conditions imply that the real number x is rational ?
`(i) x^(1//2)"is rational"" "(ii) x^(2)and x^(5) "are rational"" "(iii) x^(2)and x^(4)"are rational"`

A

I and II only

B

I and II only

C

II and III only

D

I,II and III

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The correct Answer is:
A
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