Mathematical Olympiad for Girls

Olympiad date: Tuesday 22nd September 2026

The Mathematical Olympiad for Girls (MOG) is aimed at girls and young women across the UK and consists of five challenging problems.

Entry to MOG is by discretionary entry.

The new Mathematical Competition for Girls, with unlimited entry, will consist of five similar problems, but in the answer-only format.

Please note: students cannot sit both the MCG and MOG.

Not all students can be in their final school year. Click here for an example

Update to MOG/MCG Eligibility
August 2026

UKMT has reviewed the eligibility criteria for our girls’ competitions (the Mathematical Olympiad for Girls, and the Mathematical Competition for Girls) following the UK Supreme Court judgment last year in For Women Scotland Ltd v The Scottish Ministers.

The purpose of these competitions is to encourage and support participation by girls in advanced mathematics competitions. Having taken legal advice, UKMT has concluded that, under the Equality Act 2010 as determined by the Supreme Court, eligibility for these competitions must be based on biological sex. Consequently, our past practice of accepting entries by transgender girls to the girls’ competitions can no longer continue.

UKMT remains committed to treating all students, staff and volunteers with dignity and respect without exception and provides a comprehensive range of competitions for all young people.

How it works

Purchase entries

Sit challenge

Receive results

For full information on how to host the Mathematical Olympiad for Girls please visit the Competition Handbook.

Instructions

Two of the questions require numerical answers only. The instructions and spaces for answers are clearly indicated on the answer sheet.

The remaining three question require require full written explanations. If your solution involves calculations, equations, tables, etc., explain where these come from and how you are using them. Explain how the steps of your solution link together, and give full proofs of assertions that you make. Answers alone will gain few marks (if any).

Partial marks may be awarded for good ideas, so try to hand in everything that documents your thinking on the problem — the more clearly written the better. However, one complete solution will gain more credit than several unfinished attempts.

Earlier questions tend to be easier. Questions have multiple parts. Often earlier parts introduce results or ideas useful in solving later parts of the problem.

The use of rulers and compasses is allowed, but calculators and protractors are forbidden.

You may use rough paper to note down your ideas, but you should write up your solution on the answer sheet provided for each question.