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If x and y are positive real number, the...

If `x and y` are positive real number, then :

A

`xgtyrArr-xgt-y`

B

`x gt y rArr-x lt -y`

C

`x gt y rArr 1/x gt 1/y`

D

`xgtyrArr(-1)/xlt(-1)/y`

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The correct Answer is:
B
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