前>>99
>>134
1回目にjoker (1/53)(52/52)(8/51)(8/50)(8/49)
joker出ない　+(52/53)(8/52)(8/51)(8/50)(8/49)
2回目にjoker +(52/53)(1/52)(8/51)(8/50)(8/49)
3回目にjoker +(52/53)(8/52)(1/51)(8/50)(8/49)
4回目にjoker +(52/53)(8/52)(8/51)(1/50)(8/49)
5回目にjoker +(52/53)(8/52)(8/51)(8/50)(1/49)
=8^3(1+8+1+1+1)/(53・51・50・49)
=1024/(53・17・25・49)
=1024/｛(530+371)(1250-25)｝
=1024/(901・1225)
=1024/(1081200+22525)
=1024/1103725