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by Brian Gladman on September 1, 2012

Sunday Times Teaser 2603 – Pandigital Square

by Des MacHale

My telephone number is a perfect square with the digits 1 to 9 in some order. Its square root ia a five digit number whose digits have consecutive values in some order.

My neighbour’s number is also a perfect square using the digits 1 to 9 in some order (although you don’t need to know this). His number is at least double mine.

With logic and a few calculations you should be able to work out my number.

What is it?

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