Out of all the alternatives given, select the option

Find the wrong number in the given number series.

7, 9, 16, 12, 25, 15, 36

Find the wrong number in the given number series.

26, 38, 60, 110, 206, 398

5000, 2000, 800, 320, 128, 52.2

8, 7, 12, 35, 128, 635

Find the wrong number in given series.

2118, 2140, 2209, 2334, 2550, 2893

39, 43, 59, 95, 159, 281

Find the wrong number in the given number series.

121, 132, 145, 160, 181, 204

Direction: Find the wrong number in given number series.

640, 663, 713, 794, 920, 1065

275, 50, 165, 33, 99, 19.8, 59.4