Odds and evens
To the right is a long multiplication sum in which odd digits have been replaced by O and even digits by E.
What are the two three-figure numbers being multiplied?
WIN £15 will be awarded to the sender of the first correct answer opened on Wednesday 28 November. The Editor’s decision is final. Please send entries to Enigma 1721, New Scientist, Lacon House, 84 Theobald’s Road, London WC1X 8NS, or to enigma@newscientist.com (please include your postal address).
Answer to 1715 Open the box: The piece of card was 8 cm by 3 cm
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The winner Peter Hayes of Moreland, Victoria, Australia
