b***k 发帖数: 2673 | 1 ☆─────────────────────────────────────☆
JackSheng (重新振作) 于 (Fri Jun 19 02:44:53 2009, 美东) 提到:
this one is too standard ...
a unit-length stick, broken into three pieces at two uniformly randomly
selected points. what is the probability that the three pieces can form a
triangle.
i know i know this is tooooold, please bear with me, just for the record
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xmly (xmly) 于 (Fri Jun 19 04:22:41 2009, 美东) 提到:
tooold我还是不知道答案
ft
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