Wednesday, August 21, 2019

How Many Triangles Are There? Here’s How to Solve the Puzzle

Source: https://www.nytimes.com/2019/08/21/science/math-equation-triangles-pemdas.html?emc=rss&partner=rss
August 21, 2019 at 12:00PM

Counting will get you nowhere. Try a little combinatorics instead.

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