question_answer

Directions: In the following questions a number series is given. Only one number is wrong which does not fit in the series? Find that number.                                                                                               [IBPS (PO/MT) 2014]

41, 45, 61, 97, 181, 261, 405

A) 181

B) 97    

C) 261                              

D) 61

E) 45

Correct Answer: A

Solution :

Pattern of the series is as

Hence, number 181 is wrong it must be replaced with 161.