1.

If x be a rational number and y be an irrational number, then :

Answer»

both `X + y` and `xy` are necessarily IRRATIONAL
both `x + y` and `xy` are necessarily RATIONAL
`xy` is necessarily irrational, but x + y can be EITHER rational or irrational
`x + y` NECESSARITY irrational , but xy can be either rational or irrational

Answer :A


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