Concept 2 of 3
Watch on YouTubeVideoLetter series
A letter series uses positions in the alphabet. Convert each letter to a number (A=1, B=2, ..., Z=26), find the rule, then convert back.
Example
Find the next: A, C, E, G, ...
Positions: 1, 3, 5, 7 — gap of 2. Next position: 9 → I.
Positions: 1, 3, 5, 7 — gap of 2. Next position: 9 → I.
💡 Tip:Memorize: A=1, F=6, K=11, P=16, U=21, Z=26 as anchor points.
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2 questions to check what you just read.
0 / 2
- Q1.Find the next letter: A, C, E, G, ?
- Q2.Find the next letter: B, D, F, H, ?