Subject :IMO Class : Class 9

Which of the following statements is INCORRECT?

AThere can be a real number which is both rational and irrational.

BThe sum of any two irrational numbers is not always irrational.

CFor any positive integers x and y, x < y ⇒ x^{2} < y^{2}

DEvery integer is a rational number.

GIVE AN EXAMPLE OF THE SUM OF ANY TWO IRRATIONAL NUMBERS IS NOT ALWAYS IRRATIONAL