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by Brian Gladman on December 30, 2018

Sunday Times Teaser 2936 – Multicoloured

by Danny Roth

Published December 30 2018 (link)

George and Martha are selling wall-paper of various colours. By replacing letters with positive digits, they have devised the following multiplication problem:


The N in GREEN is the remaining positive digit. The red wall-paper is sold only in squares, which is appropriate since RED is a perfect square.

What is the value of GREEN?

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