41/48...（2/3）＾3*4＝32/81???the same as I did first time

来源: 于 2010-08-01 09:13:00 [旧帖] [给我悄悄话] 本文已被阅读：次

[(11/16)*(16/81)+(15/16)*(32/81)]/[(16/81)+(32/81)]=41/48