Question

# If xy and yx are rational numbers, then which of the following options is correct?

A

x ≠ 0, y can be 0

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B

x can be 0, y ≠ 0

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C

x ≠ 0, y ≠ 0

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D

both x and y can be 0

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Solution

## The correct option is C x ≠ 0, y ≠ 0 A rational number cannot have its denominator as 0. As xy and yx are rational numbers, so x≠0,y≠0.

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