Question:

Find the missing letter in the series: C, F, I, L, O, ___

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Use the EJOTY (5-10-15-20-25) rule to quickly find letter positions.
Updated On: Jun 26, 2026
  • T
  • U
  • S
  • R
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The Correct Option is D

Solution and Explanation

Step 1: Concept
Letter series progression.

Step 2: Analysis

Convert letters to their numerical positions: C=3, F=6, I=9, L=12, O=15.

Step 3: Calculation

The pattern is an increase of 3 each time. The next number is $15 + 3 = 18$.

Step 4: Conclusion

The 18th letter of the alphabet is R. Final Answer: (4)
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