Aptitude - Odd Man Out and Series

Go on adding 7, 9, 11, 13, 15, 17 respectively to obtain the next number.

So, 33 is wrong. It must be 35

A x 2 + 1, B x 3 + 1, C x 2 + 1, D x 3 + 1 and so on.

So, 356 is wrong.

Each even term of the series is obtained by multiplying the previous term by 2.

2^nd term = (1^st term) x 2 = 6 x 2 = 12

4^th term = (3^rd term) x 2 = 48 x 2 = 96.

6^th term = (5^th term) x 2 = 384 x 2 =768.

4^th term should be 96 instead of 100.

Go on dividing by 4 to get the next number.

So, 200 is wrong.

Go on multiplying 2 and adding 1 to get the next number.

So, 39 is wrong.