Question

DEF, DEE₂, DE₂F₂, _ _ _

• A. 0EF₃
• B. D₃EF₃
• C. D₂E₃F
• D. D₂E₂F₂

Hint:

Check numerical progression of subscripts carefully.

Answer 1

The Correct Option is C

Step 1: Count subscripts of letters D, E, F.
Step 2: Powers increase cyclically: D:1→1→2→2, E:1→2→2→3, F:1→1→2→1
Step 3: Hence next term is D₂E₃F.