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Question

For real numbers x and y we write xRy iff xy+2 is an irrational numbers. Then relation R is reflexive and symmetric also.

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Solution

For every value of x belongs to R, xx+2
i.e., 2 is an irrational number.
Therefore, it is reflexive.
Now Let's say x=2 and y=2 then xy+2=222 which is irrational
but when y=2 and x=2,
xy+2 is not irrational;
it is not symmetric.


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