Sunday Times Teaser 2756 – Terrible Teens
by Victor Bryant
Published: 19 July 2015 (link)
I have allocated a numerical value (possibly negative) to each letter of the alphabet, where some different letters may have the same value. I can now work out the value of any word by adding up the values of its individual letters. In this way NONE has value 0, ONE has value 1, TWO has value 2, and so on up to ELEVEN having value 11. Unfortunately, looking at the words for the numbers TWELVE to NINETEEN, I find that only two have values equal to the number itself.