Ritangle - an Integral maths competition

Congratulations!

We are delighted to announce that the winning team of Ritangle 2018 is from The Thomas Hardye School, Dorset .

This means that The Thomas Hardye School retain the trophy for another year!

Their fully correct answer to the final challenge was submitted on Wednesday 5th December. Once again, Ritangle was challenging and this is a magnificent achievement!

The final challenge is still available here. and questions 1 to 25 are in a gallery further down this page.

Here is the full solution to Ritangle 2018 questions 1 to 25; the final challenge.

Thanks to all the students who took part and the teachers supporting them.

Ritangle will return in 2019...


Winning School, Ritangle 2018	The Thomas Hardye School
Fully correct answers also received from	Carmel College The English School, Nicosia Grange Academy The Heathland School The King's School Canterbury Magdalen College School Sheffield Girls School Sir Williams Borlase Grammar School Queen Elizabeth's School, Barnet Tonbridge School

Winning School, Ritangle 2018

The Thomas Hardye School

Fully correct answers also received from

Carmel College

The English School, Nicosia

Grange Academy

The Heathland School

The King's School Canterbury

Magdalen College School

Sheffield Girls School

Sir Williams Borlase Grammar School

Queen Elizabeth's School, Barnet

Tonbridge School

Ritangle is a competition for teams of students of A level Mathematics, the International Baccalaureate and Scottish Highers.

No knowledge of mathematics beyond A level Mathematics required.

The first five questions were released on 1st, 8th, 15th, 22nd, 29th October 2018.

The other 20 questions will then be released daily (on weekdays) from Wednesday November 7th 2018, with question 25 released on Tuesday 4th December 2018.

Correct answers to questions release a clue for the final question.

The final question will be made available on Wednesday 5th December 2018.

A maths hamper, including a one-year subscription to Integral, and trophy for the school or college of the winning team!

Technology can help with some Ritangle questions.

Registration for Ritangle 2018 is now closed.

Good luck
with Ritangle 2018!

Full description and rules

Download a classroom poster about Ritangle

We are delighted that GCHQ is sponsoring this year’s Ritangle competition

Once you have registered your team (complete the form and submit your registration using the 'Register your team' button) you may submit an answer to the preliminary round below. The captain's e-mail address is required again so we can check your team has been registered.

The answer to the preliminary round is a string of 18 digits. The first two digits of this string are the position in the alphabet of the answer to preliminary question A. The other 16 digits are as described in preliminary questions B to E.

Captain's E-mail:

Answer: (18 digits left)

When you submit an answer an e-mail will be sent to both the team captain and the nominating teacher. For correct answers this will contain a clue for the main competition. If your answer is incorrect then you can try again. You don't need the clue to solve the main competition.

Keep your answers safe for now (and don't share with other teams!), see above for details of how correct answers to these questions unlock clues for the final question.

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2017 MEI. Integral is produced by MEI, an independent charity committed to improving mathematics education. Registered Charity Number 1058911.