question_answer

Find out the wrong number in each case. 49, 56, 64, 71, 81, 90, 100, 110:

A)  56                                         

B)  64

C)  71                                         

D)  81

Correct Answer: C

Solution :

                Terms at odd places are 72, 82, 91, 102 and terms at even places are 56, 72, 90, 110 i.e., with differences of 16, 18 and 20.