超現代和算研究アンテナが更新されました
■−2018/07/14 09:41:54 MathLibre「KNOPPIX/Math」ウィキ
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■−2018/07/14 09:37:47 Recent Problems - Project Euler
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■−2018/07/14 05:38:51 King’s College London - Seven Day Maths
http://www.kcl.ac.uk/mathsschool/Weekly-Maths-Challenge/Weekly-maths-challenge.aspx
Challenge 178: Join the Dots...
If I have four dots, arranged in two rows of two to make a square, and I draw a triangle by joining three of the dots, there are four triangles I can draw, but they are
■−2018/07/14 05:11:08 群馬県和算研究会
http://www.ene1.me.gunma-u.ac.jp/wasanken/