Divide the 12 balls into 4 groups of 3's.公仔箱論壇/ n5 Z1 i3 {# Z0 B8 s
Weigh group 1 & 2www3.tvboxnow.com: D( }# [2 G2 J/ P( _$ U# M! `& [
then weigh group 2 & 3 / ]% S% ?' P* g- p7 C公仔箱論壇If the results are Equal & Equal, it means the ball with the different weight is in group 4.' u7 J5 @' ?/ B
If the results are Equal & Unequal, it means the ball is in group 3. * s% j' t, w9 T) O! a6 I) ZIf the results are Unequal & Equal, it means the ball is in group 1. " L9 \9 L: y6 H% f- i/ Ttvb now,tvbnow,bttvbIf the results are Unequal & Unequal, it means the ball is in group 2. ! A6 E# I: p& h; g1 D) Nwww3.tvboxnow.com - B# e' D, U* f! FOnce you determine the group that contains the ball.* j# f/ P- a8 H( C8 b
Simply weigh two of the balls
[CASE 2]www3.tvboxnow.com3 {- J" i, P& H
重D果邊叫A組,輕 D果邊叫B組,為方便稱呼,將A組編為A1,A2,A3,A4,B組編為B5,B6,B7,B8,而頭先C組果4個則是正常波。A組重過B組,即異重波可能是在A組[較正常波重]或在B組[較正常波輕],將A1,B5加一個正常波同A2,B6,B7稱,A3,A4,B8放埋一邊。結果有以下三個﹕