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Dictionary Order & Alphabet

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medium importance~1-2 Q in Tier 13 formulasโšก 6 shortcuts4 subtopics

Arranging words as in a dictionary, alphabet-position arithmetic (EJOTY anchors, from-right = 27 โˆ’ p, shifts), modified-alphabet sequences, and the dictionary rank of a word among its letter arrangements. The whole topic runs on one rule โ€” the first differing letter decides, and a prefix comes before its extensions โ€” plus small, careful counting on paper.

Track record in the exam

avg 0.5 Q / shift2024: 0โ€“1 Q2025: 0โ€“1 Q

Questions per shift in recent SSC CGL papers.

Test difficulty mix (51 questions)

11 easy28 medium12 hard

Question patterns exams keep repeating

Taken from previous-year papers. If a pattern is marked "very common", expect to see it in your exam.

Sort words in dictionary order

very common

A few words that start the same way, and you are asked 'which comes first or last?'.

Compare letter by letter up to the first different letter.

A shorter word that is the start of another comes first.

Example

Arrange Scant, Scan, Scandal in dictionary order. Which comes last?

Scan is the start of Scandal, so Scan comes first

Scandal and Scant: the 5th letters are d and t, and d comes before t

Order: Scan, Scandal, Scant

Answer: Scant

Learn this in โ€œDictionary order rulesโ€ โ†’

Find the Nth word

very common

A list of similar words and 'which word is third from the left?'.

Sort the words in dictionary order and number them.

From the right, the kth word is number (total + 1 โˆ’ k) from the left.

Example

Arrange Statue, Status, Station, Statute, Stature in dictionary order. Which is third from the left?

All start with Stat, so compare the next letter: i comes before u

Station comes first. The rest (Statue, Stature, Status, Statute) differ at the 6th letter: e, r, s, t

Order: Station, Statue, Stature, Status, Statute

Answer: Stature

Learn this in โ€œArranging words and picking slotsโ€ โ†’

Letter position in the alphabet

very common

'Which letter is 9th from the right?' or 'how many letters between X and Y?'.

Remember E = 5, J = 10, O = 15, T = 20, Y = 25.

Kth from the right = position 27 โˆ’ k from the left.

Example

Which letter is 9th from the right of the English alphabet?

Position from the left = 27 โˆ’ 9 = 18

Count: A = 1, ... O = 15, P = 16, Q = 17, R = 18

Answer: R

Learn this in โ€œLetter positions and shiftsโ€ โ†’

Changed alphabet

common

The alphabet is changed (for example reversed), and you are asked for a letter's place.

Write the new alphabet once, then count on paper.

Fully reversed: place p from the left is the letter at place 27 โˆ’ p in the usual order.

Example

If the alphabet is written in reverse (Z first), which letter is 5th from the left?

New order: Z, Y, X, W, V, ...

Count 5 places from the left

Answer: V

Learn this in โ€œLetter positions and shiftsโ€ โ†’

Rank of a word

very common

'What is the rank of the word among all words made from its letters?'.

Go letter by letter: count the words that start with each smaller unused letter.

Add them up, then add 1.

Example

Find the rank of BEAD when all its arrangements are written in dictionary order.

Letters in order: A, B, D, E. Starting with A: 3! = 6 words

Starting with BA or BD: 2 + 2 = 4 words

BEAD is the first word starting with BE, so 6 + 4 = 10 words come before it

Rank = 10 + 1 = 11

Learn this in โ€œDictionary rank and word surgeryโ€ โ†’

Make a word from letters

common

'Which word can (or cannot) be made from the letters of ...?'.

Count each letter of the big word.

Check each option for a missing letter or a letter used too many times.

Example

Which word cannot be made from the letters of DISTRIBUTION: STUDIO, BIRD, ROBUST, BRUSH?

DISTRIBUTION has D, I, S, T, R, B, U, O, N (I three times, T twice)

STUDIO, BIRD and ROBUST use only these letters

BRUSH needs an H, and there is no H

Answer: BRUSH

Learn this in โ€œDictionary rank and word surgeryโ€ โ†’

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