Sunday Times Teaser 2537 – Odds and Evens
by Victor Bryant
Published: 8 May 2011 (link)
E | E | E | ||
O | O | O | ||
— | — | — | ||
E | E | E | E | E |
E | O | E | E | |
O | O | O | E | |
— | — | — | — | — |
O | E | O | O | E |
I have taken two three-figure numbers and multiplied them together by long multiplication. On the right are my workings, but with O marking the positions of the odd digits and E the even digits:
What are the two three-figure numbers?
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