Question

19. If x and y are positive odd integers and z is an even integer, which one of the followi
statements cannot be true?
(A) (x - z)y2 is odd
(B) (x - 2)2y is even
(C)(x - z)y is odd
(D) (x - y)2z is even
(E) none of these​

Answer 1

Answer:

none of these is the answer

Answer 2

Answer:

b option

since x is odd and odd - even = odd

so x - 2 = odd no.

(x-2)2y = even no. since it is finally multiplied by two , any no. multiplied by two gives even no.