来自申丽华的问题
英文数学概率题Ifthreefairdicearethrown,andthesumisanoddnumber,whatistheprobabilitythatallthreediceshowanoddnumber?
英文数学概率题
Ifthreefairdicearethrown,andthesumisanoddnumber,whatistheprobabilitythatallthree
diceshowanoddnumber?

