If x is an odd integer, which of the following is an even integer?
Options:
(A) 2x-x
(B) x+1
(C) 2x+3
(D) x^3
(E) 3x+2x Let's think first. Stream of consciousness:
Plug in an odd integer; in this case 3
(2*3)-3 = 3 Odd
3+1 = 4 Even
(2*3)+3 = 9 Odd
3^3 = 27 Odd
(3*3)+(2*3) = 9 + 6 = 15 Odd
So, the answer is (B).