Recently published items - Numbas at mathcentre.ac.uk

Question by Julien Ugon

The purpose of this question is to ask students to decrypt a message encrypted with a Hill cipher.

Published on 22/08/2023 09:53 CC BY-SA

Question by Julien Ugon and 1 other

This question asks students to decrypt a message using a simple Caesar cipher, without giving them the key.

Published on 22/08/2023 02:14 CC BY-SA

Question by Julien Ugon and 1 other

This question gives a text encrypted with an affine cipher and asks students to decrypt it.

Published on 22/08/2023 02:00 CC BY-SA

Exam (1 question) by max kh

No description given

Published on 17/08/2023 15:44 No licence specified

Question by max kh

No description given

Published on 17/08/2023 15:38 No licence specified

Question by

Christian Lawson-Perfect

Shows how to use the bin function to group data into equal-sized intervals.

Published on 16/08/2023 15:07 CC BY

Question by Merryn Horrocks

Factorise two algebraic terms that have a numerical gcd > 1. Part of HELM book 1.3

Published on 16/08/2023 05:52 CC BY-NC-SA

Question by Merryn Horrocks

Factorise a+bk where a and b are non-coprime integers, and k is a letter. Part of HELM Book 1.3.4

Published on 16/08/2023 05:42 CC BY-NC-SA

Exam (3 questions) by Merryn Horrocks

HELM Book 1.3.4 exercises

Published on 16/08/2023 05:32 CC BY-NC-SA

Question by Merryn Horrocks

Removing brackets from expressions of the form (a+b)(c+d). Part of HELM Book 1.3

Published on 16/08/2023 05:11 CC BY-NC-SA