Sunday Times Teaser 2697 – Gimme Five!
by Andrew Skidmore
In the following numbers, each digit has been consistently replaced by a different letter:
THREE FIVE EIGHT NINE TEN ELEVEN THIRTEEN
The sum of the digits in each number is a multiple, greater than one, of the number described by its word form.
What number does FIVE represent?
3 Comments
Leave one →
Here is a version that speeds up Geoff’s version by doing the permutations progressively rather than all at once at the beginning: