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Sunday Times Teaser 2791 – Four-Square Family

by Susan Bricket

Published: 20 March 2016 (link)

My four sons are all under 20 and just one of them is a teenager. Their ages (or, more precisely, the squares of their ages) have some remarkable properties. Firstly, two years ago the square of one of their ages equalled the sum of the squares of the other three ages. Secondly, this year the sum of the squares of two of their ages equals the sum of the squares of the other two ages.

What, in increasing order, are their ages?

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  1. Brian Gladman permalink

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