摘要: Given a dice with n sides, you have to find the expected number of times you have to throw that dice to see all its faces at least once. Assume that t 阅读全文
posted @ 2017-11-05 16:18 天之道,利而不害 阅读(284) 评论(0) 推荐(0)
摘要: Sometimes some mathematical results are hard to believe. One of the common problems is the birthday paradox. Suppose you are in a party where there ar 阅读全文
posted @ 2017-11-05 15:20 天之道,利而不害 阅读(358) 评论(0) 推荐(0)