If a is an even integer and b is an odd integer which of the following must be an odd integer :
Choose the correct choice from the following answers
A) a/b
B) ab
C) 2a+b
D) 2(a+b)
E) 3a/b
We can always look for low hanging fruits first to solve such questions under 30secs.   Expression in C, is basically 2*Even+Odd or simply Even+Odd which is always going to be odd.   Hence 2a+b
<result>C</result>
If a is an even integer and b is an odd integer which of the following must be an odd integer :