What is the next number in the series: 1, 1, 2, 4, 3, 9, 4,16, …. ?

What is the next number in the series: 1, 1, 2, 4, 3, 9, 4,16, …. ?

A 5

B 8

C 20

D 25

Solution

Correct Answer: Option A

There are two series: First one just the sequential numbers 1,2,3,4,

Second one consists of their squares:

1,4,9,16,25