divde the 12 balls into 3 sets of 4. # m0 s6 F4 W% S& N+ W
weight any 2 sets. 4 W! j, |6 Y e; i; Mwww2.tvboxnow.comif the 2 sets are equal, then you know the heavy one is in the third ; c9 ?: X( Q9 H1 B( y1 B" @/ Vif one of the 2 is heavier, then the heavy one is in that set ! \9 F" `. z1 }5 M& V7 l: ~tvb now,tvbnow,bttvbthen divide the 4 balls into 2.1 v# B* Q% M( \
weigh themtvb now,tvbnow,bttvb9 j9 V6 J3 [# b z5 L3 {
and divide the heavier into 1 2 X9 w% G/ Y% V, J2 T% {3 R6 yand weight them.4 T2 X" A; g& j
3 x weighing and get the ans. 公仔箱論壇; U* p# T- P3 P8 V {# q {5 ]4 u3 h
in less than 15 secs.
1. 6 aside and weight. 4 S0 u% o. P1 }www2.tvboxnow.com2. heavier side from (1), 3 aside weight again.www2.tvboxnow.com' m: G5 ~( v1 R V$ N
3. heavier side from (2), take 2 out of 3 to weight. If equal weight the one not on the scale is the heavier one. else the heavier one on the scale is the odd one. www2.tvboxnow.com/ |4 V. a: }9 H" `0 s# ]7 ?4 A
6 z! L, v6 P, j3 [but i have a question. 重量異常 can be heavier or lighter.... so......