Will try to apply my brains.
(a/b)/c = a/bc
1. S1 is insuff. Does not tell us anything about a,b
2. S2 is insuff.
a = b+ c
a = 4, b = 2, c = 2 => a/bc = 1 = Integer = True
a = 5, b = 2, c = 3 - Not True
3. S1 and S2
c = 2, but b can be anything, hence a can be anything. Not suff.
Thanks a lot buddy. From your post I have got the explanation. Btw, OA is B.
The only mistake you did in you calculation is missing the point "positive distinct integers". So while plugging the values, the combination a = 4, b = 2, c = 2 cannot be true
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