回複：Still not correct, but thanks....

來源: 於 2010-07-04 19:19:37 [舊帖] [給我悄悄話] 本文已被閱讀：次

P(A1A2A5A2A5A3)+P(A1A2A5A2A4A3)+P(A1A2A5A3A4A3)+P(A5A2A5A3A4A3)=
1/8+1/32+1/32+1/8=10/32
So the result is 23/32