- AR30L
- BR36O
- CR36L
- DU36L
Step-by-Step Solution
First letters advance by 3 (C, F, I, L, O→R); numbers are perfect squares 4, 9, 16, 25, 36; last letters decrease by 3 (X, U, R, O→L). The next term is R36L.
Answer: C) R36L
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