DEF, DEF₂, DE₂F₂, _____, D₂E₂F₃

A. DEF₃

B. D₃EF₃

C. D₂E₃F

D. D₂E₂F₂

Answer: Option D

Solution(By Examveda Team)

In this series, the letters remain the same: DEF.

The subscript numbers follow this series:

111, 112, 122, 222, 223, 233, 333, ...