RT @aperiodical: Stupid-looking maths question does the rounds, isn’t stupid https://t.co/be4d89j4a1 https://t.co/EdT4yylSbR - The Calculator Guide from Twitter

Stupid-looking maths question does the rounds, isn’t stupid https://t.co/be4d89j4a1 http://pic.twitter.com/EdT4yylSbR

— The Aperiodical (@aperiodical) October 11, 2017

from Twitter https://twitter.com/GuideCalculator

October 12, 2017 at 07:05PM
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