大学数学概率问题，在线求解，急急急
Ifyourollasix-sideddie12times,whatistheprobabilitythatyougetallsixnumbersatleastonce?...
If you roll a six-sided die 12 times, what is the probability that you get all six numbers at
least once? 展开
least once? 展开
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Total possibilities is 12P12= 479001600; and choose 6 out of 12 cases(order does matter)=>12P6= 665280,therefore, the probability should be 665280/479001600=1/720. Done
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