If a ' b = 2a - 3b + ab. then 3 * 5 + 5 * 3 is equal to : (1) 22 (2) 24 (3) 26 (4) 28 ISSC COL Prelim Exam. 04.07.1999 (First Sitting) P If p x q =p +q+ . the value of 8 x 2 is : (1) 6 (2) 10 (3) 14 (4) 16 (SSC COL Prelim Exam. 04.07.1999 (Second Sitting) Two numbers x and y (x > y) are such that their sum is equal to three times their difference. 3xy Then value of 2(x2 - y?) will be: (1) (2) 1 (3) 141 1: ISSC COL Prelim Exam. 04.07.1999 (Second Sitting) The value of 1 + X x41 x+2 X+3 is : (1) 1+ X+4 (2) x+4 WW\\