If a is an even integer and b is an odd integer, which of the following expression could be an even integer?

If a is an even integer and b is an odd integer, which of the following expression could be an even integer?

A 3a+3b

B 3a+2b

C 2a+3b

D 2a+b

Solution

Correct Answer: Option B

solve eaach eqn by putting a=2 and b=3