Alphabet Test Questions for SSC CGL

Letter Position in Alphabet

Every letter has a fixed position: A=1, B=2, ... Z=26. SSC tests this by asking 'which letter is at position X' or 'what is the position of letter Y'. The reverse is equally important: Z=26, Y=25, ... A=1 (counting backward). Most candidates know A-M (1-13) but struggle with N-Z (14-26). A quick trick: any letter's reverse position = 27 minus its forward position.

• Forward: A=1, B=2, C=3... M=13, N=14... Z=26
• Reverse: Z=1, Y=2, X=3... N=14, M=13... A=26
• Reverse position formula: 27 - (forward position)
• Middle letter is M (13th) — use this as anchor
• Common error: confusing position 13 (M) and 14 (N)

Sequence & Gap Problems

These ask: 'How many letters are between X and Y?' or 'Which letter comes after a certain pattern?' The trick is to count the gap, not the letters themselves. If asked 'letters between A and D', count B and C = 2 letters (not 3). Gap = (position of second letter) - (position of first letter) - 1.

• Gap between two letters = difference in positions minus 1
• Example: Between C (3) and G (7) = 7 - 3 - 1 = 3 letters (D, E, F)
• Watch for 'between' vs 'from X to Y' — they mean different things
• Reverse sequences work the same way — count backward positions
• Common trap: students count the endpoint letters too

Coding & Pattern Recognition

SSC often codes letters using position shifts. Example: A=B, B=C (shift by +1), or A=Z, B=Y (reverse alphabet). You must identify the rule from 1-2 examples, then apply it. Common patterns: shift by fixed number, reverse alphabet, skip letters, or alternate forward-backward.

• Identify the rule from given coded example(s)
• Common rules: +1 shift, -1 shift, reverse alphabet, +2 skip, alternating
• Test rule on second example to confirm before answering
• Watch for mixed rules: some letters shift, others reverse
• Reverse alphabet coding: A↔Z, B↔Y, C↔X (use 27-position formula)

Alphabetical Order & Ranking

Questions ask: 'Arrange these words in alphabetical order' or 'Which word comes first/last alphabetically?' Compare first letter; if same, compare second letter, and so on. This is straightforward but errors happen due to careless reading or confusion between 'comes before' and 'comes after'.

• Compare letters left-to-right, one position at a time
• If first letters differ, the word with earlier letter comes first
• If first letters same, move to second letter, and repeat
• Watch for similar words (e.g., 'cat' vs 'cats') — shorter comes first if it's a prefix
• SSC rarely tests pure alphabetical order alone; usually combined with other logic

Reverse Alphabet & Mirror Coding

A special coding where each letter maps to its mirror position: A↔Z, B↔Y, C↔X, etc. This is the most common coding in SSC CGL. The formula is simple: mirror position = 27 - original position. Alternatively, think of it as flipping the alphabet like a mirror.

• Mirror/Reverse: A=Z, B=Y, C=X, D=W, ... M=N, N=M, ... Z=A
• Formula: Mirror of Xth letter = (27-X)th letter
• Example: Mirror of E (5) = 27-5 = 22 = V
• This is symmetric: if A mirrors to Z, then Z mirrors back to A
• Useful for 'opposite letter' or 'reverse alphabet' questions

• Confusing forward and reverse positions — always clarify: 'from left' or 'from right'?
• Counting endpoints when asked 'between' — remember gap formula excludes both endpoints
• Forgetting the -1 in gap calculation — 'between A and D' is 2 letters, not 3
• Misidentifying the coding rule — always verify with a second example before answering
• Mixing up alphabetical order with position — 'first alphabetically' ≠ 'first position in sequence'
• Arithmetic errors in reverse position: 27 - X, not 26 - X

• ABCDEFGHIJKLMNOPQRSTUVWXYZ — memorize in chunks: ABC, DEF, GHI, JKL, MNO, PQR, STU, VWX, YZ
• M is the middle (13th) — use as anchor for quick position recall
• Reverse = 27 - Forward — simple formula, always works
• Gap = Difference - 1 — the -1 is critical, don't forget
• Mirror alphabet: A↔Z, B↔Y, C↔X — think of a seesaw or mirror reflection

• Alphabet Test questions appear in Tier 1 as 1-2 standalone questions; rarely combined with other logic in Tier 1, but common in Tier 2 as part of coding-decoding sets
• Time management: these should take 30-45 seconds max. If you're stuck, skip and return — no partial credit
• Recent SSC CGL papers show a shift toward reverse alphabet coding and gap problems; position-based questions are less frequent now
• Expect 1 question on reverse/mirror alphabet, 1 on gap/sequence, and occasionally 1 on alphabetical order in a typical Tier 1 paper
• Double-check arithmetic: position errors (off-by-one) are the #1 reason for wrong answers — verify your calculation before marking
• In Tier 2, alphabet test is often embedded in longer coding-decoding chains; master the basics here so you can apply them quickly under pressure