Divide the 12 balls into 4 groups of 3's.tvb now,tvbnow,bttvb5 F3 P" @4 b$ w/ F- q# E+ n% T; T
Weigh group 1 & 2
5 b: n E0 ^( w+ O4 |tvb now,tvbnow,bttvbthen weigh group 2 & 3) i( s4 \4 P. [, `/ l+ ]
If the results are Equal & Equal, it means the ball with the different weight is in group 4.tvb now,tvbnow,bttvb2 q: q: H# X9 i; P
If the results are Equal & Unequal, it means the ball is in group 3.
! \) J% s3 s# _; P# N5.39.217.77:8898If the results are Unequal & Equal, it means the ball is in group 1.tvb now,tvbnow,bttvb% n7 c/ d* _' ^0 G
If the results are Unequal & Unequal, it means the ball is in group 2.公仔箱論壇+ \8 K. m/ ^5 Z
$ f: e) Y2 W0 E# Ptvb now,tvbnow,bttvbOnce you determine the group that contains the ball.
& v8 W8 M" x$ F5 W* F9 A' a5.39.217.77:8898Simply weigh two of the balls |