Question -
Answer -
p:If x is an integer and x2 is even,then x is also even.
Let q: x isan integer and x2 is even.
r: x iseven.
To prove that p istrue by contrapositive method, we assume that r is false, andprove that q is also false.
Let x is noteven.
To prove that q isfalse, it has to be proved that x is not an integer or x2 isnot even.
x isnot even implies that x2 is also not even.
Therefore, statement q isfalse.
Thus, the given statement p istrue.