Copyright © University of Cambridge. All rights reserved.

'Missing Digit' printed from

Show menu

The 8-digit number 1234*678 is a multiple of 11. Which digit is represented by *?


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