divde the 12 balls into 3 sets of 4. 公仔箱論壇: D/ U; X0 Z4 d m, h
weight any 2 sets.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。 h4 ] [+ W1 W/ x" p& H
if the 2 sets are equal, then you know the heavy one is in the third
# b9 i; w# S9 _/ |4 t" z* M) i& iif one of the 2 is heavier, then the heavy one is in that set
0 E- c, L8 [0 o3 r& @8 p1 cthen divide the 4 balls into 2.
2 z7 Y$ M' R' Q- u9 Ntvb now,tvbnow,bttvbweigh them
3 y' R" S9 i% \% V, UTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。and divide the heavier into 1公仔箱論壇2 k- P1 S) ~- Q
and weight them.
( z! R4 G- }) t* v: R" ]www1.tvboxnow.com3 x weighing and get the ans. 公仔箱論壇* i2 G' d k( l- N0 v* |
in less than 15 secs. |