23 days...
23 questions...
leading to one answer...
and one winning team.

Congratulations!

Congratulations to Scott Dixon and Tim Stallard of Kind Edward VI School, Stratford who are the 2016 Ritangle winners.

Scott and Tim submitted a correct answer at 8pm on Friday 9th December and we were able to check their working and verify them as winners on Monday 12th December. Ritangle was challenging and this is a magnificent achievement!

Congratulations to students at Ashlawn School, Rugby who submitted the second correct answer supported by working on the morning of Monday 12th December.

The answer to Ritangle 2016 was LeonardoPisanoFibonacci (not case sensitive!). A full solution to Ritangle 2016 is now available.

Thanks to all the students who took part and the teachers supporting them - the schools/colleges from which a correct answer was received are listed here.

Thanks to those organisations that supported Ritangle. We hope that Ritangle will return in 2017.

Winning School, Ritangle 2016 King Edward VI School, Stratford
Runners up Ashlawn School
Correct answer received from (in no particular order) The Perse School
King Alfreds Academy
Queensmead School
King Edward VI Camp Hill School for Girls
Taverham High School
Stephen Perse Foundation
Redmaids' High School
Warwick School
Dr Challoner's High School
Bilborough College
The British School of Brussels
Chislehurst and Sidcup Grammar School
Westminster School
Oundle School
Thurston Community College
Abingdon School
Queensmead School

Wednesday 14th Dec: Clue
a) Suppose our puzzle had six questions.
1. What is 12?
2. What is 22?
3. What is 32?
4. What is 42?
5. What is 52?
6. What is 75 x 551?
The answer to 6 is 41325.
So we can write down
sixteen
one
nine
four
twentyfive

b) Cantor's diagonal argument

Mon 12th Dec: We've still not identified a winner..here is a clue "If the question is ‘What is 1 + 2 + 3 + 4 + … + 100?’ the answer is fivethousandandfifty (which links with 4-8-3-5).

We noticed a few tweets about Q22: We are abel to give you a clue.

We noticed a few tweets about Q17: "The answer is elementary, my dear ritanglers."

Thanks to those who spotted there are two possible answers to question 14! In the solution we want, point C is in the first quadrant.

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

23
23a
23b
23c
23d

  Ritangle is a competition for teams of students of A level Mathematics or the International Baccalaureate

  No knowledge of mathematics beyond A level Mathematics required

  One question will be released daily for 23 consecutive weekdays, the first question was released on 9th November.

  The final question unlocks an overall answer based on the solutions to all the questions

  A maths hamper and trophy for the school or college of the winning team!

  The preliminary round questions have all been released. These unlock a clue for the main competition, see below.

  Technology can help with some Ritangle questions

  Register your team for Ritangle today!

Ritangle 2016 is now closed!

Thanks for supporting
Ritangle!

Full description and rules

Download a classroom poster about Ritangle

The five preliminary questions have now been posted. Teams can be registered below and then preliminary round answers can be submitted.

A
B
C
D
E

Thanks to all the below for contributing to Ritangle's maths hamper prize


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2016 MEI. Integral is produced by MEI, an independent charity committed to improving mathematics education. Registered Charity Number 1058911.