Number & Alphabet Series • Topic 2 of 4

Alphabet Series

Convert letters to positions (A=1 … Z=26) and treat it like a number series. The usual rules are a fixed step (+2, +3), a growing step, or skipping a fixed number of letters. Recount positions if a pattern seems to break.

Turn letters into numbers

The moment you write each letter's position, an alphabet series becomes an ordinary number series. "A, C, E, G" is just 1, 3, 5, 7 — a step of +2 — so the next is 9 = I.

SeriesPositionsRule → next
A, C, E, G1, 3, 5, 7+2 → I (9)
B, D, G, K2, 4, 7, 11+2, +3, +4 → P (16)
Z, X, V, T26, 24, 22, 20−2 → R (18)
Recount when in doubt. The top error here is miscounting the alphabet. If a pattern seems to "break", recount positions carefully — letters do not wrap in most series (they simply stop at Z).

✅ Solved examples

1. Next: A, C, E, G, ?
Step +2: G(7) → I(9). Answer I.
2. Next: B, D, G, K, ?
Steps +2, +3, +4 → next +5. K(11) → P(16). Answer P.
3. Next: Z, X, V, T, ?
Step −2: T(20) → R(18). Answer R.
4. Next: A, B, D, G, ?
Steps +1,+2,+3 → +4. G(7) → K(11). Answer K.

✏️ Practice — try these, take hints as needed

1. Next: C, F, I, L, ?
Step +3.
L(12)+3.
—
O
2. Next: A, D, H, M, ?
Steps +3,+4,+5.
next +6.
M(13)+6.
S
3. Next: Y, W, U, S, ?
Step −2.
S(19)-2.
—
Q
4. Next: B, E, H, K, ?
Step +3.
K(11)+3.
—
N
5. Next: A, C, F, J, ?
Steps +2,+3,+4.
next +5.
J(10)+5.
O

📝 Topic test — 8 questions

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