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IMO 2025–26: International Mathematics Olympiad by SOF

What is IMO?

The International Mathematics Olympiad (IMO) is an annual, two-level mathematical competition organized by SOF for students in Classes 1–12, aimed at enhancing problem-solving and critical thinking skills through school-curriculum-aligned mathematics challenges sofworld.org.

Exam Levels & Eligibility

  • Level 1: Open to all students in Classes 1–12 .
  • Level 2: For qualifiers from Level 1 (top 5% per class or zonal/state toppers), applicable for Classes 3–12 .

Exam Format & Marking

Level 1 (Offline, OMR-based, 60 minutes)

ClassesQsSections SummaryTotal Marks
1–435Logical, Mathematical, Everyday Math (10 Q each), Achievers (5 Qs × 2 marks)40
5–1250Logical Reasoning (15 Q), Math/Applied Math (20 Q), Everyday Math (10 Q), Achievers (5 Qs × 3 marks)60

  • Logical Reasoning: patterns, classification, analogies, series

  • Mathematical Reasoning: class-level math logic

  • Everyday Maths: applied arithmetic and basic concepts

  • Achievers Section: higher-order questions from current class

  • No negative marking

Level 2

  • Classes 3–4: 35 Qs (30 × 1 mark + 5 achievers × 2) = 40 marks
  • Classes 5–12: 50 Qs with same structure as Level 1 = 60 marks

Syllabus Breakdown

Classes 1–4

  • Logical: patterns, odd one out, pre-algebraic puzzles
  • Everyday Math: basic arithmetic, measurements, shapes, money, time
  • Achievers: advanced math applications

Classes 5–10

  • Logical: series, analogies, verbal/non-verbal reasoning
  • Math Reasoning: integers, fractions, geometry, data handling, algebra
  • Everyday Math: class-level arithmetic, geometry, data, probability
  • Achievers: deeper problem solving

Classes 11–12

  • Logical: non-verbal and verbal puzzles
  • Applied Math: sets, functions, calculus basics, coordinate & 3D geometry, probability, combinatorics, algebraic reasoning
  • Everyday Math: class-level quantitative topics
  • Achievers: advanced math reasoning

Cheat Sheet & Prep Tips

Logical Reasoning

  • Practice pattern recognition, sequence puzzles, analogies, classification, and non-verbal reasoning.

Mathematical Reasoning & Everyday Math

  • Classes 1–4: Strengthen arithmetic and concept of time, money, and measurements.
  • Classes 5–10: Build mastery in algebra, geometry, data handling, and probability.
  • Classes 11–12: Deepen understanding of calculus basics, coordinate geometry, functions, and combinatorics.

Achievers Section

  • Focus on timed problem-solving with challenging tasks.
  • Use past Level 2 IMO questions and sample papers for rigorous practice.

General Tips

  • Take full-length mock tests under timed conditions.
  • Review errors thoroughly and correct weak areas.
  • For Level 1: include previous-class concepts.
  • For Level 2: focus only on current-class topics.
  • NO negative marking—attempt all questions strategically.

Rewards & Recognition

  • Awards include medals, trophies, cash prizes, and certificates at school, zonal, and international levels.
  • Detailed rank reports (school to international) and scholarships for meritorious and underprivileged students

Quick Facts

  • Mobility: 3 exam cycles/year (Summer, Winter, Academic) in many regions.
  • Mode: Offline OMR
  • Duration: 60 minutes
  • Negative marking: No
  • Prep Resource: SOF sample papers and mock tests