Practice Questions
Lane A — Patterns & coding
Study step 2 of 26
40 MCQs ready
Comfortable with number series first.
Next topic in path →Concept Explanation
Alphabet series questions use the English alphabet in order (A to Z) with a fixed rule: skip letters, reverse direction, pair letters, or group them into blocks. Treat each letter as a position (A = 1, B = 2, …, Z = 26) when the pattern is numeric.
Common patterns
- Constant step: move forward or backward by the same number of letters (+2, +3, −3).
- Changing step: differences increase (+2, +3, +4, …) or alternate two rules.
- Mirror / pairing: AZ, BY, CX … or A, Z, B, Y from both ends.
- Blocks: AB, CD, EF … or ABC, DEF, GHI …
- Reverse blocks: PON, MLK, JIH …
How to solve fast
- Write the gap between consecutive letters (in positions or count of skipped letters).
- Check odd vs even positions if a single rule does not fit.
- For pairs or triplets, apply the rule inside each group first, then between groups.
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Q1 EasyFind the next letter in the series: A, C, E, G, ?ExplanationSkip one letter each time (+2): A, C, E, G, I.
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Q2 EasyFind the next letter: Z, X, V, T, ?ExplanationReverse alphabet with step −2: Z, X, V, T, R.
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Q3 EasyFind the next letter: A, D, G, J, ?ExplanationAdd 3 letters each time: A, D, G, J, M.
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Q4 EasyFind the next pair: AB, CD, EF, GH, ?ExplanationConsecutive letter pairs in order: … GH, IJ.
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Q5 EasyFind the next letter: M, J, G, D, ?ExplanationStep −3 each time: M, J, G, D, A.
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Q6 EasyFind the next letter: P, R, T, V, ?ExplanationAdd 2 letters: P, R, T, V, X.
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Q7 EasyFind the next letter: D, F, H, J, L, ?ExplanationEven-position letters (+2): D, F, H, J, L, N.
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Q8 EasyFind the next group: ABC, DEF, GHI, ?ExplanationThree-letter blocks in alphabetical order: next is JKL.
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Q9 EasyFind the next pair: ZX, WV, UT, SR, ?ExplanationReverse-alphabet pairs stepping −2: QP.
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Q10 EasyFind the next letter: Z, W, T, Q, ?ExplanationStep −3: Z, W, T, Q, N.
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Q11 EasyFind the next letter: I, K, M, O, ?ExplanationSkip one letter (+2): I, K, M, O, Q.
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Q12 EasyFind the next pair: AA, CC, EE, GG, ?ExplanationRepeated letter pairs skipping one letter: II.
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Q13 EasyFind the next letter: L, N, P, R, T, ?ExplanationConsecutive even-position letters (+2): V.
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Q14 EasyFind the next letter: Y, V, S, P, ?ExplanationStep −3 backward: Y, V, S, P, M.
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Q15 EasyFind the next pair: MN, OP, QR, ST, ?ExplanationConsecutive letter pairs: UV.
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Q16 EasyFind the next letter: S, P, M, J, ?ExplanationStep −3: S, P, M, J, G.
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Q17 EasyFind the next letter: A, E, I, M, ?ExplanationAdd 4 letters (every 4th): A, E, I, M, Q.
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Q18 EasyFind the next group: ABCD, EFGH, IJKL, ?ExplanationFour-letter blocks in order: MNOP.
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Q19 MediumFind the next letter: B, D, G, K, ?ExplanationDifferences +2, +3, +4, +5 → next +6. K + 6 = P.
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Q20 MediumFind the next pair: AZ, BY, CX, DW, ?ExplanationFirst letter moves forward, second moves backward: E and V.
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Q21 MediumFind the next letter: A, Z, B, Y, C, ?ExplanationAlternate from start and end of alphabet: next after C is X.
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Q22 MediumFind the next pair: ZA, YB, XC, WD, ?ExplanationFirst letter −1, second letter +1: VE.
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Q23 MediumFind the next group: ACE, BDF, CEG, ?ExplanationEach block uses alternate letters; each row shifts by +1: DFH.
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Q24 MediumFind the wrong letter in the series: B, E, H, K, OExplanationShould increase by 3: B, E, H, K, N. O should be N.
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Q25 MediumFind the next letter: A, B, D, G, K, ?ExplanationDifferences +1, +2, +3, +4, +5 → K + 5 = P.
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Q26 MediumFind the next letter: E, J, O, T, ?ExplanationAdd 5 letters each time (every 5th letter): E, J, O, T, Y.
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Q27 MediumFind the next group: BD, FH, JL, ?ExplanationEach letter in pair +4: BD → FH → JL → NP.
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Q28 MediumFind the next letter: G, I, L, P, ?ExplanationDifferences +2, +3, +4, +5 → P + 5 = U.
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Q29 MediumFind the next letter: R, O, L, I, ?ExplanationStep −3: R, O, L, I, F.
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Q30 MediumFind the next pair: BO, CP, DQ, ?ExplanationFirst letter +1, second +1: ER.
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Q31 MediumFind the next letter: D, G, K, P, ?ExplanationDifferences +3, +4, +5, +6 → P + 6 = V.
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Q32 HardFind the next group: PON, MLK, JIH, ?ExplanationReverse-alphabet triplets moving backward: GFE.
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Q33 HardFind the next letter: C, F, J, O, ?ExplanationDifferences +3, +4, +5, +6 → O + 6 = U.
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Q34 HardFind the next group: AB, DEF, GHIJ, ?ExplanationBlock length increases: 2, 3, 4, 5 letters → KLMNO.
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Q35 HardFind the next letter: F, M, T, ?ExplanationAdd 7 each time (wrap): F + 7 = M, M + 7 = T, T + 7 = A.
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Q36 HardFind the next group: AZBY, CXDW, EVFU, ?ExplanationPairs alternate low/high letters; pattern continues with GTHS.
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Q37 HardFind the wrong letter: A, C, F, J, O, UExplanationDifferences +2, +3, +4, +5, +6 → after O should be V, not U.
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Q38 HardFind the next group: ABD, CEF, GHI, ?ExplanationThree-letter blocks with middle letter skipped pattern ABD, CEF-style shift → JKM.
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Q39 HardFind the next letter: H, K, O, T, ?ExplanationDifferences +3, +4, +5, +6 → T + 6 = Z.
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Q40 HardFind the next group: ZX, TR, NL, ?ExplanationEach letter −6 (reverse alphabet step): HF.