问题标题：
【一道数学概率问题英文题目哦(a)Inthenationallottery,youidentify6ballsfromasetof49balls.Then6ballsareselectedatrandomfromthe49ballsandyougetaprizeifatleast3ofthesematchtheballsyouidentified.(Ignori】
问题描述：
一道数学概率问题英文题目哦
(a)Inthenationallottery,youidentify6ballsfromasetof49balls.Then6ballsareselectedatrandomfromthe49ballsandyougetaprizeifatleast3ofthesematchtheballsyouidentified.(Ignoringthebonusballfornow)
---Whatistheprobabilitythatyougetaprizeofsomesort?
(b)actuallyitismorecomplicated;afterthe5ballsareselectedatrandom,asixth“bonus”ballisselectedatrandomandyougetaspecialkindofprizeif,ofthesixballsyouidentified,5wereintheselectedgroupofsixandthesixthisthebonusball(aswellasalltheprizesformatching3ormoreofthefirstsixballs)
---Whatistheprobabilityyougetaspecialkindofprizejustdescribed?
---Keepingthisinmind,whatistheprobabilitythatyougetaprizeofsomesort?
单乐生回答：
Solution(a):Ifthisproblemneedn'tarrangeallballsinasequence.3_balls:1/184244_balls:1/2118765_balls:1/19068846_balls:1/13983816(b):Theprobabilitythatgetaspecialkindofprizeis1/44;Witho...
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