In this type of questions, one term in the number series is wrong. Find out the wrong term.
`2,3,4,4,6,8,9,12,16`

Options

A. 3
B. 6
C. 9
D. 12

Answer

C

Explanation

The given sequence is a combination of three series.
I. 1st, 4th, 7th terms i.e. 2,4,9......
II. 2nd, 5th, 8th terms i.e. 3,6,12,.....
iii. 3rd, 6th, 9th terms i.e. 4,8,
In each one of I, II and III, each term is twice the preceding term So, 9 is wrong and must be replaced by `(4 xx 2)` i.e. 8.