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Question

If x and y are two rational and irrational numbers respectively then which of the following are necessarily irrational.

A
x+y
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B
xy
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C
xy
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D
All of the above
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Solution

The correct option is D All of the above
Option D is correct
Let x=2 and y=3
x+y=2+3
which is irrational
xy=23
which is also irrational
xy=23
which is also irrational
All of them are irrational . So option D is correct

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