Sunday Times Teaser 2711 – Megan’s House

by Graham Smithers

The students in Megan’s class were each asked to use eight of the nine digits 1 .. 9 to produce three two digit squares and a two digit prime, thus leaving one digit unused.

If you knew Megan’s house number, which was the same as her unused digit, you would then be able to work out her four numbers.

What were they?