Regional Mathematical Olympiad

RMO 2026 Exam: Date, Syllabus & Preparation

Your guide to the second stage of India’s Mathematical Olympiad pathway: qualification, exam format, proof-writing practice and official papers.

15 November 2026Exam date
1–4 pmThree-hour examination
6 problemsWritten proofs

Schedule and format: official HBCSE announcement ↗

RMO full form: What is the RMO exam?

The Regional Mathematical Olympiad (RMO) is the stage after IOQM and before INMO. Students solve a small set of challenging mathematics problems and explain their reasoning in complete written proofs. Use this page to check the current exam information, choose practice papers and plan your preparation.

Start with IOQM-to-RMO qualification if you are checking entry requirements, or go straight to the RMO syllabus and previous papers if you are ready to practise.

Official 2026–27 cycle

RMO 2026 exam date and pattern

ItemOfficial information
Date15 November 2026
Time13:00–16:00 (1–4 pm)
Duration3 hours
Questions6
Response styleDetailed proof for every question

The official HBCSE cycle page is the authority for schedule changes, eligibility and later instructions. Do not use an older RMO page as the current notice.

Qualifying through IOQM

RMO 2026 eligibility and selection criteria

Scoring at least 10% in IOQM 2026 is the minimum threshold; qualification also depends on regional selection. Under the published rules:

  • Category A: Classes 8–11. Each region selects the top 200 students, including ties at the last place.
  • Category B: Class 12. Each region selects the top 40 students, including ties at the last place.
  • Girls’ quota: Five additional Category A girls per region, with ties at the fifth place. Category B has no separate girls’ quota.

Overseas candidates are handled under the specific official rules. Check the 2026 qualification criteria PDF and the published selection list; a score estimate alone does not confirm qualification.

For the underlying age, class and other entry conditions, see the IOQM eligibility guide. The IOQM 2026 cutoff guide explains how first-stage cutoffs relate to RMO selection.

After qualification

RMO registration and hall ticket

The official MTA portal states that qualifying students must register again for RMO, with no payment involved. Follow the current HBCSE instructions for the registration window and hall-ticket process.

  1. Confirm your name and details in the official qualification information.
  2. Complete the required RMO registration according to the current notice.
  3. Read the hall ticket and exam instructions carefully for your centre, reporting time and permitted items.

MTA official portal and FAQs ↗ · Find your HBCSE regional coordinator ↗

The biggest change after IOQM

IOQM rewards a correct two-digit answer; RMO evaluates the argument. For each problem, define objects clearly, justify every implication, treat boundary cases, explain constructions and finish with the exact claim required.

IOQM → RMO

RMO vs IOQM: How the exams differ

State the plan

Identify the lemma, construction, invariant, extremal choice or contradiction that will drive the proof.

Close every gap

Do not hide a non-obvious implication behind “clearly” or a diagram.

Conclude exactly

Return to the original claim and show that every case has been handled.

A promising idea can earn value only when it is communicated mathematically. Practise writing for a reader who cannot infer missing steps.

Four major domains

RMO exam syllabus: the four main areas

Number theory

Divisibility, congruences, Diophantine equations, valuations, primes and constructive integer arguments.

Algebra

Polynomials, inequalities, sequences, functional relationships and algebraic transformations with justified conditions.

Geometry

Triangles, circles, similarity, concurrency, transformations and careful auxiliary constructions.

Combinatorics

Counting, pigeonhole, invariants, colouring, extremal arguments and finite processes.

HBCSE states that major Olympiad areas are algebra, combinatorics, geometry and number theory, with difficulty increasing through RMO, INMO and IMO. Topic names alone do not define readiness; proof depth does. The examples above are preparation priorities, not a separate official chapter list. Read the HBCSE Mathematics Olympiad syllabus for the source framework.

Writing framework

How to write a complete RMO proof

  1. Restate: identify the givens and exact target.
  2. Explore: test small cases or draw a precise diagram on rough work.
  3. Choose: name the main idea and any supporting lemma.
  4. Write: connect claims in a logical order with reasons.
  5. Check: handle equality, zero, sign, degeneracy or other boundary cases.
  6. Conclude: state why the target now follows.

Definitions, theorem conditions and quantifiers matter. If equality occurs only in a special case, say so and verify it.

After IOQM

RMO preparation plan: eight to ten weeks

PhaseFocus
Weeks 1–2Proof grammar, contradiction, induction, parity, congruence and clean geometry notation
Weeks 3–5Two domain-focused proof sets per week with mentor feedback
Weeks 6–7Mixed RMO problems; select and complete three rather than touching all six superficially
Weeks 8–9Full three-hour papers, reconstruction and gap analysis
Final weekShort proof review, recurring lemmas, calm paper strategy and logistics

Adapt the sequence to the actual interval and the student’s IOQM diagnosis. Qualification should trigger immediate proof-writing practice, not a new collection of resources.

Official archive

RMO previous year question papers and solutions

Choose the matching paper and solution set. Other years and regional variants are available in the official archive. Older papers are for practice; follow the current notice for 2026 exam-day rules.

Use the official HBCSE paper and solution archive. Official solutions are models, not the only valid approaches.

  1. Attempt for a serious fixed period before reading a solution.
  2. Mark the furthest justified point reached.
  3. Compare the key idea, not just the final prose.
  4. Close the solution and rewrite it independently.
  5. Ask whether every theorem condition and case is visible.

Read before buying

RMO books and a free sample

RMO The Practice Book by Ajeet Dubey

RMO The Practice Book

By Ajeet Dubey · Mathiit

Yearwise papers and complete solutions for 2013–2019 and 2023–2025, with regional variants, 28 past papers and five supplementary mock papers. The collection contains 200 questions in total.

Open the free 15-page RMO flipbook sample to inspect the explanations and worked proofs before deciding whether the book suits your level.

This is a book by the author of this guide. It is a practice resource, and its inclusion does not imply HBCSE endorsement.

For topic practice and a broader reading list, explore the Olympiad books guide and free inequality chapter preview.

Three-hour decisions

Read all six, then invest where progress is real

  • Use an opening scan to identify familiar structures and accessible subclaims.
  • Start with a problem where you can build a complete argument.
  • If an approach stalls, preserve useful lemmas and switch before one problem consumes the paper.
  • Leave space and label continuations clearly.
  • Reserve time to check logical transitions, not only arithmetic.

A complete proof on fewer problems is generally stronger than disconnected observations across many, but partial progress should still be written clearly when it is mathematically justified.

Common losses

Common mistakes in RMO proofs

Assuming the picture

A diagram suggests relationships but does not prove them.

Proving one direction

An “if and only if” statement requires both directions.

Dividing by zero

State why a denominator is nonzero or separate the case.

Checking examples only

Patterns guide discovery but do not prove all cases.

Citing an unnamed fact

State the theorem or prove the lemma needed.

Unreadable revision

Structure, notation and a clear final claim help the evaluator follow the proof.

Keep the stages separate

RMO cutoff, results and the next stage

The IOQM cutoff determines selection for RMO. RMO performance is then used for progression towards INMO under that cycle’s published rules. These are different selection stages, so an IOQM cutoff should not be treated as an RMO-to-INMO cutoff.

Use the HBCSE 2026–27 cycle page for official RMO result, selection and re-evaluation notices when issued. Check the INMO preparation guide for the next learning step.

RMO 2025 results and documents archive → Historical reference for the completed cycle.

Questions answered

RMO exam FAQs

What is the full form of RMO?

RMO stands for Regional Mathematical Olympiad. It is the stage after IOQM and before INMO in India’s Mathematical Olympiad pathway.

Does scoring 10% in IOQM guarantee RMO selection?

No. The 10% score is a minimum threshold. Regional ranks, category rules and the published selection list also determine qualification.

Do qualified students need to register again for RMO?

Yes. The official MTA portal says qualifying students must register for RMO and that no payment is involved. Follow the current HBCSE registration and hall-ticket instructions.

Can I preview the Mathiit RMO practice book for free?

Yes. The Books page includes a free 15-page sample of RMO The Practice Book by Ajeet Dubey, with introductory pages and worked RMO problems. Open its cover to use the flipbook or choose the sample PDF link.

When is RMO 2026?

The official HBCSE 2026–27 cycle page schedules RMO for 15 November 2026 from 13:00 to 16:00.

How many questions are in RMO 2026?

The official pattern has six problems in a three-hour examination.

Is RMO objective or descriptive?

RMO is descriptive. Each question requires a detailed proof.

How is RMO different from IOQM?

IOQM records numerical answers on OMR, while RMO evaluates complete written mathematical arguments.

What is the RMO syllabus?

Preparation centres on algebra, combinatorics, geometry and number theory, with deeper proof requirements than IOQM.

Where can I find RMO previous papers?

Use the official HBCSE past-papers archive, which includes RMO papers and available solutions.

How should I use official solutions?

Compare the key idea after a serious attempt, then close the solution and reconstruct a complete argument independently.

Can partial progress matter in RMO?

Write mathematically justified lemmas and steps clearly, but prioritise turning promising work into complete proofs.

Next step

Start writing proofs before the IOQM habits fade.

Use the official RMO archive, choose a small feedback-driven plan and practise communicating every non-obvious step.

Source and review policy: Official schedule, qualification criteria and paper links checked on 15 September 2026. Sources: HBCSE cycle announcement, IOQM-to-RMO selection criteria, syllabus and official paper archive. The study plan and proof-writing advice are Mathiit editorial guidance. IOQM.in is an independent educational website; official notices take precedence.
Ajeet Dubey, IOQM mentor and Mathematics Olympiad teacher

MENTOR PERSPECTIVE

“Proof writing begins when a correct idea is expressed clearly enough for another person to verify.”
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