question_answer

Direction: Replace the question mark with the correct option in each of the question from.

3, 5, 6, 11, 9, 17, 12, ?

A) 20

B)                              10

C) 22                       

D)       23

E) None of these

Correct Answer: D

Solution :

Explanation Option [d] is correct because there are two alternate series: Series I: 3, 6, 9, 12         (addition of 3) Series II: 5, 11, 17, 23,    (addition of 6)