Find out the wrong number in the series:
15, 16, 34, 105, 424, 2124, 12576

2 Answers on this Question

1. 2124

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2. The series is 15, 16, 34, 105, 424, 2124, 12576
   1) (15*1) + 1 = 16
   2) (16*1) + 2 = 34
   3) (34*3) + 3 = 105
   4) (105*4) + 4 = 424
   5) (424*5) + 5 = 2125
   Clearly, they gave 2124 instead of 2125, so it is the wrong number in the series.

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