本帖最後由 fannhf 於 2010-1-29 03:01 PM 編輯 公仔箱論壇8 r& |7 e5 ~/ t3 w7 P
2 C, D0 p/ w* {. H/ e# B3 R5.39.217.77:889811次 ; v6 b5 |5 I* } z9 G5.39.217.77:8898 : w& `9 f9 e. U) h3 M公仔箱論壇make mistake O4 F. s# x& o( I+ b
the answer should be 3x9+4=31, that mean 10 times
+ f) ?$ x. G1 Z# [公仔箱論壇each time 4 person but 1 need to back to pick up the other 3 6 t- V3 Z6 r+ X7 ~公仔箱論壇return x 10 = 30 people 9 |2 h& Z8 C/ l. q6 C- K5.39.217.77:88981 time return公仔箱論壇' h5 C. |: g& \- x- G
2 person on last time 5.39.217.77:88988 z, \/ j6 O) H* L
total : 12 times