For a+4b to be odd, A must be odd.GmatKiss wrote:If a and b are positive integers, is a + 4b odd?
1) b is even.
2) a is odd.
(1) Insuff.
(2) Suff.
(B)
For a+4b to be odd, A must be odd.GmatKiss wrote:If a and b are positive integers, is a + 4b odd?
1) b is even.
2) a is odd.