Copyright © University of Cambridge. All rights reserved.

'Partial Magic' printed from

Show menu

In a magic square, each row, each column and both main diagonals have the same total. In the partially completed magic square shown, what number should replace x?

Use the interactivity below:

This text is usually replaced by the Flash movie.

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.

This problem is taken from the UKMT Mathematical Challenges.
View the archive of all weekly problems grouped by curriculum topic

View the previous week's solution