Bunuel wrote:
If a, b and c are integers, is 3c/2 an integer?
(1) ac/2 is a multiple of 3
(2) bc/3 is even
(1) tells us either a is 3k and c = 2k or c is 3k and a is 2k..in both the cases answer is different
Not sufficient
(2) tells us either b is 2k and c is 3k or c is 2k and b is 3k..in both the cases answer is different
Not sufficient
on combining also we have either c=3k or c=2k..different answers.Not sufficient
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