Ritangle is a competition for teams of students aged 16 - 18 of A level Mathematics, the International Baccalaureate and Scottish Highers (or qualifications with equivalent content)
No knowledge of mathematics beyond A level Mathematics required
Twenty-four questions released on weekdays provide information needed for the final challenge.
Correct answers to these questions are needed to solve the final question.
Download a classroom poster about Ritangle
Registration for Ritangle 2020 is open and the first two questions have been released.
The registration form and answer check are now available below.
The final (multi-part) question will be made available at 4.00pm on Tuesday 8th December 2020.
The prize? A maths hamper, including a free year long subscription to Integral, and trophy for the school or college of the winning team!
Many thanks to Maplesoft and Hodder Education for their donations to the hamper, more of the contents of the hamper will be revealed during the competition.
Creative, challenging, innovative - Ritangle nurtured teamwork, enthusiasm, resilience. Absolutely loved it
Follow the instructions carefully to get the final answer for each question, particularly in relation to rounding. These are needed for the final question which will be released at 4.00pm on Tuesday 8th December 2020.
Keep you answers safe for now. Please don't share answers outside of your team; others are having fun finding them!
Corrections, clarifications and advice for Ritangle 2020.
How technology can help with some Ritangle questions
Some Frequently Asked Questions about Ritangle
The prize hamper so far!
Teachers' comments about Ritangle
Questions from previous competitions
Ritangle 2019 questions
Ritangle 2019 questions 1 - 25 (ppt file).
Full solution to Ritangle 2019.
Previous Ritangle questions
Ritangle 2018 Questions
Ritangle 2018 Answers to questions 1 to 25
Ritangle 2017 Questions
Ritangle 2017 Answers to questions 1 to 20
Ritangle 2016 Questions
Ritangle 2016 Answers to questions 1 to 22