回复：请教高中数学题
gguyy
2009-03-15 19:14:42
( reads)
C(13,2)*C(4,2)*C(4,2)*C(11,1)*C(4,1)/C52,5)=0.047539
C(13,2)*C(4,2)*C(4,2)*C(11,1)*C(4,1)/C52,5)=0.047539
stephen7yu
2009-03-16 05:31:01回复：回复：请教高中数学题