One of my favourites from @solvemymaths - great problem solving questions. Thank you and Happy Birthday! https://t.co/N5hWSeBrt3 http://pic.twitter.com/5h9Yd7TraQ
— The Maths Magpie (@TheMathsMagpie) July 27, 2017
via Twitter https://twitter.com/TheMathsMagpie
July 27, 2017 at 08:21PM
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