Latest GMAT Aptitude Question SOLUTION: If –2< a < 11 and 3 < b < 12, then which of the following is NOT true? (A) 1 < a+b < 23 (B) -14< a-b< 8 (C) -7< b-a< 14 (D) 1< b+a< 23 (E) -24< ab< 132