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Fifteen

In the addition sum on the right the digits have been replaced by letters and smiley faces. Different letters stand for different digits, the same letter stands for the same digit, a smiley face can be any digit, and leading digits cannot be zero.

If FIVE is divisible by 5 and ELEVEN is divisible by 11, what number is FIFTEEN?

WIN £15 will be awarded to the sender of the first correct answer opened on Wednesday 24 February. The Editor’s decision is final. Please send entries to Enigma 1579, New Å®ÉúСÊÓƵ, Lacon House, 84 Theobald’s Road, London WC1X 8NS, or to enigma@newscientist.com (please include your postal address).

Answer to 1573 Sat, Sun, Mon, Tue: The numerical total is 59136

The winner Neil Dunford of Walton on Thames, Surrey, UK