You're offline — cached pages and worlds still work
Drishti Innovations logo
Drishti Innovations

Ranking

Comprehensive notes, formulas, and practice questions for Ranking.

Ranking

Ranking

What you'll learn

  • How ranking and ordering puzzles determine position, score order, or age sequence from partial clues.
  • To build rank ladders and use relative comparisons (taller than, scored more than).
  • To combine ranking with ties, gaps, and reverse rank (second from top = rank 2).
  • To solve height/weight/marks ordering problems efficiently for exams.

Key concepts

Level 1 — Foundations

Verbal: Ranking places entities on a line from 1st to nth where 1st is highest/best/oldest unless the question says otherwise — read the direction once.

Clue types:

Clue formMeaning
A is above BA has better/smaller rank number than B (if 1 = top)
A is immediately below BRank(A) = Rank(B) + 1
A is not in top 3Rank(A) ≥ 4
Only two people between A and B

Tools: Draw a vertical ladder (rank 1 at top) or horizontal number line. Fill fixed ranks first ("Meera is 1st"), then relative pairs.

Transitivity: If A > B and B > C, then A > C — chain to collapse three clues into one.

Level 2 — Exam depth

Ties: "A and B tied for 2nd" → both rank 2, next person is rank 4 (skip 3). CBSE-style questions often forget skipped ranks — check marking scheme notes.

Dual ordering: Sometimes height and marks are separate — use two ladders, same names, do not mix columns.

Maximum/minimum rank questions: "What is the lowest rank Ravi could have?" → optimise by pushing Ravi down while keeping other clues valid.

Speed trick: Count entities n. If n−1 independent comparisons form a chain covering everyone, ranking is complete without guessing.

Common exam pattern: 5 people, 3 clues, find rank of X — draw 5 slots, eliminate impossible slots for X one clue at a time.

Worked example

Rank five students by marks from three clues

Anya, Ben, Cara, Dev, Eva — highest marks = rank 1.
(1) Anya ranked above Ben and Cara. (2) Dev is not in top 2. (3) Eva is immediately below Anya. (4) Ben is last.

Step 1 — Ben = rank 5.
Step 2 — Anya above Ben and Cara → Anya ∈ {1,2,3,4}; Cara ∈ {1,2,3,4}.
Step 3 — Eva immediately below Anya → pair (Anya, Eva) as consecutive with Eva lower.
         If Anya=1 → Eva=2. Dev not top 2 → Dev ∈ {3,4,5}; Ben=5 → Dev=3 or 4; Cara fills rest.
Step 4 — Anya above Cara → Cara not 1. Try Anya=1,Eva=2,Dev=3,Cara=4,Ben=5 ✓
Step 5 — **Anya=1, Eva=2, Dev=3, Cara=4, Ben=5**. Rank of Dev = **3**.

Find rank gap from 'two people between'

If Amit is rank 2 and "two persons between Amit and Priya", Priya is rank 5 (not rank 4).
Between = strictly in the middle positions: ranks 3 and 4 are the two between → Priya = 5.

Common mistakes

MistakeWhy it happensFix
Reversing rank 1 directionAssumed 1 = lowestUnderline whether 1 is top or bottom
Off-by-one on 'between'Counted endpoints'Between' excludes the named persons
Ignoring tie skip ruleNext after tie is rank+2Tied for k → next rank is k+2
Mixing height and age ordersTwo attributes one ladderSeparate ladders per attribute

Quick check

  • Six runners: who finished 1st if A beat B, B beat C, and D was last?
  • Rank 1 at top vs rank 1 as shortest — how does clue "above" change?
  • Clue: "Only one person scored more than Rita" — what is Rita's rank?
  • Stretch: 7 people, no ties — minimum clues to fix full order?

Revision tip: Revisit adjacent topics in Analytical Reasoning before mixed practice on Ranking.

Open the Practice tab for graded questions on Ranking.

Exam strategy

Draw your ladder once and label direction (1 = top / best). For "minimum rank of X" questions, push X as low as possible while keeping other clues true — this is optimisation on a ranking line. Write alternate rankings as small branches only when two clues conflict on paper; most CBSE items have unique solutions. Drill between and immediately language daily — one misread word changes the entire order.

Key Takeaways (TL;DR)

  • What you'll learn
  • Key concepts
  • Worked example
  • Common mistakes

Master this topic with Drishti OS

Get unlimited mock tests, AI-powered mentorship, and complete video courses when you join.

Start Free Practice