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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 (iii) only

C

(ii) and (iii) only

D

(i) (ii) and (iii)

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