알쓸신통
Little's law https://en.wikipedia.org/wiki/Little%27s_law
German tank problem https://en.wikipedia.org/wiki/German_tank_problem
secretary problem https://en.wikipedia.org/wiki/Secretary_problem
사다리타기
birthday problem https://en.wikipedia.org/wiki/Birthday_problem
권력지수 http://dongascience.donga.com/news.php?idx=-5190399
https://www.mathpark.com/50
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