The pattern followed here is: The sum of the first and second digits of the first number is multiplied by the sum of the first and second digits of the third number to obtain the second number. (68, 84, 42) → (6 + 8) X (4 + 2) = (14 X 6) = 84 (53, 35, 25) → (5 + 3) X (2 + 5) = (8 X 7) = 56 (72, 81, 54) → (7 + 2) X (5 + 4) = (9 X 9) = 81 (34, 35, 23) → (3 + 4) X (2 + 3) = (7 X 5) = 35 (39, 78, 24) → (3 + 9) X (2 + 4) = (12 X 6) = 72 Hence, option D is the answer as it does not follow the given pattern.
2, 12, 90, 240, ?, 1260
2, 12, 36, 80, ?, 252
148, ‘?’ , 15 4 , 17 8 , 23 8 , 35 8 , 56 8
2 4 5 19 70...
There are three series given below which are following with the same pattern.
Series I: 1, 12, 38, 193, 1355
Series II: 6, B, C, D, E
...12 10 13 18.5 25.50 ...
14 26 ? 558 4432 44270
...24, 12, 18, ?, 157.5, 708.75
7 26 63 126 215 342
...104 106 110 113 ? 126
