What will come in place of the question mark (?) in each of the following series?
124, 112, 176, 420, 1488, ?
7140
The pattern of the series is:
124 × 1 - 12 × 12 = 112
112 × 2 - 12 × 22 = 176
176 × 3 - 12 × 32 = 420
420 × 4 - 12 × 42 = 1488
1488 × 5 - 12 × 52 = 7140