6.5, 11, 22, 25.5, 51, 54.5

Direction: Find out the wrong number in the following number series.

Q. 6.5, 11, 22, 25.5, 51, 54.5

A.11

B.51                                                      

C.54.5                                                   

D.6.5                                                     

E. None of these

Sol:

7.5 + 3.5 = 11

11 * 2 = 22

22 + 3.5 = 25.5

25.5 * 2 = 51

51 + 3.5 = 54.5