A Cambridge Math Problem With A Surprise Twist

It’s easy to be fooled by this problem

I recently came across this problem in an old Cambridge mathematics entrance paper aimed at talented high school mathematics students. I found that the question was written in a way that lulls you into a false sense of security about the solution to the problem, but in fact the problem contains a surprise twist that only…



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Keith McNulty

Expert and Author in Applied Mathematics, Data Science, Statistics. Also writes History, Science, Culture. Find me on Twitter or keithmcnulty.org