Wednesday, 21 August 2019

https://ift.tt/2wwdHAe How Many Triangles Are There? Here’s How to Solve the Puzzle Mathematics, Social Media, Puzzles, your-feed-science Counting will get you nowhere. Try a little combinatorics instead. KENNETH CHANG https://ift.tt/30loho1 August 21, 2019 at 05:30AM


By KENNETH CHANG from NYT Science https://ift.tt/2zhqEfH

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