双色球中奖概率

1等奖:
(C6(6)*C1(1))/((C33(6)*C16(1))=1/17721088
2等奖:
(C6(6)*C15(1))/((C33(6)*C16(1))=15/17721088
3等奖:
(C6(5)*C27(1)*C1(1))/((C33(6)*C16(1))=162/17721088
4等奖:
(C6(5)*C27(1)*C15(1)+C6(4)*C27(2)*C1(1))/((C33(6)*C16(1))=7695/17721088
5等奖:
(C6(4)*C27(2)*C15(1)+C6(3)*C27(3)*C1(1))/((C33(6)*C16(1))=137475/17721088
6等奖:
(C6(2)*C27(4)*C1(1)+C6(1)*C27(5)*C1(1)+C6(0)*C27(6)*C1(1))/((C33(6)*C16(1))=1043640/17721088

不能中奖的概率(C27(6)*C15(1)+C27(5)*C6(1)*C15(1)+C27(4)*C6(2)*C15(1)+C27(3)*C6(3)*C15(1))/((C33(6)*C16(1))
=(27*26*25*24*23*22/720*15+27*26*25*24*23*6*15/120+27*26*25*24/24*6*5/2*15+27*26*25/6*6*5*4/6*15)/17721088
=(4440150+7265700+3948750+877500)/17721088
=16532100/17721088
=0.93290547397541279632492090779076
=93.3%

中奖率:1188988/17721088=0.067094526024587203675079092209237=6.7%