Divide the 12 balls into 4 groups of 3's.tvb now,tvbnow,bttvb, @7 R' _! M" W
Weigh group 1 & 2
' T& Z: e9 Y6 h/ i7 ^, Tthen weigh group 2 & 3
9 N" U, ]; u# K7 c* Bwww1.tvboxnow.comIf the results are Equal & Equal, it means the ball with the different weight is in group 4./ y P1 F: f* V0 T
If the results are Equal & Unequal, it means the ball is in group 3.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。( B- _; `2 C: r9 G1 k( T
If the results are Unequal & Equal, it means the ball is in group 1.
: d" B( R' y3 C0 `/ O& dtvb now,tvbnow,bttvbIf the results are Unequal & Unequal, it means the ball is in group 2.tvb now,tvbnow,bttvb% [' {* `3 z) g/ U
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Once you determine the group that contains the ball.www1.tvboxnow.com9 V! P1 ?: ~; @5 J2 k0 f
Simply weigh two of the balls |