Complete the following series: C, F, I, L, ?
Show answer & explanation
Correct answer: D
Explanation
The pattern followed in the given letter series is an addition of 3 to the alphabetical position of each consecutive letter:
• C (3) + 3 = F (6)
• F (6) + 3 = I (9)
• I (9) + 3 = L (12)
• L (12) + 3 = O (15)
Therefore, the missing letter is O.