divde the 12 balls into 3 sets of 4. ( y [6 Y/ K3 J7 s4 K8 \$ }# T
weight any 2 sets.
$ V4 p" r$ j, r$ j5.39.217.77:8898if the 2 sets are equal, then you know the heavy one is in the thirdTVBNOW 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。) { n8 a' o! Q
if one of the 2 is heavier, then the heavy one is in that set
2 \# {/ B2 j5 Vthen divide the 4 balls into 2.
, [5 A4 j7 o8 B; M1 zTVBNOW 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。weigh them公仔箱論壇: S2 ~+ y' H+ Y# Y* X
and divide the heavier into 1tvb now,tvbnow,bttvb' j2 ?) F* f# Z' r0 ?/ b5 l2 C- M1 @
and weight them.- r w; R5 E' R- u
3 x weighing and get the ans. 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。8 P5 G/ a1 s2 H$ b, T
in less than 15 secs. |