Question

If 2x-1 is an odd number and 3y-1 is an even number, which of the following is are
necessarily even?
(I) x2 – 2y + 2
(II) y2 - 2x + 3
(III) 4x2 - y - 1
a) I only
b) II only
c) I and II
d) II and III​

Answer 1

x2-2y+2 can be the only possible.

so, the answer is a) 1only