Divide the 12 balls into 4 groups of 3's.
/ H3 |) Z& K% ?# X& N$ p: f: D& s) M* h- 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。Weigh group 1 & 2
& d3 ?' f" j( j4 o& A7 P6 f! f公仔箱論壇then weigh group 2 & 3tvb now,tvbnow,bttvb% f' F0 q$ W) O, @
If the results are Equal & Equal, it means the ball with the different weight is in group 4.
" b# W0 a( u3 G' HIf the results are Equal & Unequal, it means the ball is in group 3.- e# m# Z, N& K% N; E
If the results are Unequal & Equal, it means the ball is in group 1.公仔箱論壇1 N% @0 |( y# e, U
If the results are Unequal & Unequal, it means the ball is in group 2.www1.tvboxnow.com+ p- j) x, z0 `, o4 }' N
) ~3 S+ Q r1 ptvb now,tvbnow,bttvbOnce you determine the group that contains the ball.$ s* l: N6 H, z G
Simply weigh two of the balls |