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when toggle format what by license comment
Feb 11, 2011 at 9:18 vote accept Chris
Feb 9, 2011 at 16:17 comment added Igor Rivin the magic words are: "coupon collector problem"
Feb 9, 2011 at 15:20 answer added Did timeline score: 1
Feb 9, 2011 at 14:59 history asked Chris CC BY-SA 2.5