"If a and b are integers, is b an even
integer?"
1. 3a + 4b is even integer.
2. 3a + 5b is even integer.
integer?"
1. 3a + 4b is even integer.
2. 3a + 5b is even integer.
3a +4b is even.gmatmachoman wrote:"If a and b are integers, is b an even
integer?"
1. 3a + 4b is even integer.
2. 3a + 5b is even integer.
put a=2, b=1
3a+4b=10, b=1....NO
pur a=2,b=2
3a+4b = 14, b=2..YES
INSUFF
3a + 5b is even integer
put a=2, b=2
3a+5b = 16, b=2...YES
put a= 5, b=1
3a+5b = 20, b=1..NO
INSUFF
Combining:
3a + 4b is even integer.
3a + 5b is even integer
subtract 1 from 2
we get b. difference of 2 even integers is even.
pick C
