The following question, a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 2, 4, 3, 9, 4, 16, 5 ,___, ___

Options

A. 6, 21
B. 21, 9
C. 25, 6
D. 30, 8

Answer

C

Explanation

There are two alternating series. The first series consists of squares of consecutive numbers while the second series consists of consecutive numbers.
`(1)^(2) = 1, (2)^2 = 4 , (3)^2 = 9`
`(4)^(2)=16 , (5)^(2) = 25`
`2 rarr 3 rarr 4 rarr 5 rarr 6`