Here's my take on this q: If a and b are integers, and |a| > |b|, is a * |b| < a – b? (1) a < 0 a =-6, b = 2 -12 < -8 ? yes a = -3, b = 0 0 < -3? no Hence, (1) is INSUFFICIENT. (2) ab >= 0 There can be two cases that satisfy this condition. Case 1: a <=0 and b <= 0 Case 2: a >=0 and b >= 0 Take case...