If a and b are integers, is b even?
(1) 3a + 4b is even.
(2) 3a + 5b is even.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
I think 1 or 2 alone is not suff, but 1 and 2 combined is suff
[3a+5b]-[3a+4b]=b even, so b must be even