Divide the 12 balls into 4 groups of 3's. 6 A1 K2 {; Q% B! M# n6 etvb now,tvbnow,bttvbWeigh group 1 & 2- k( S6 P2 l* A; m, i
then weigh group 2 & 3www2.tvboxnow.com" i0 ]9 |, h" ^8 e5 r
If the results are Equal & Equal, it means the ball with the different weight is in group 4. D! @2 o" ^, m3 F
If the results are Equal & Unequal, it means the ball is in group 3. / A! s4 I$ a3 W2 M4 A% N2 BIf the results are Unequal & Equal, it means the ball is in group 1.公仔箱論壇& D1 F6 o% {8 k: A% J( C( D
If the results are Unequal & Unequal, it means the ball is in group 2. 9 V$ Y% E" m% Q1 k+ ` & e) l5 ?: [: w; A8 ?/ K公仔箱論壇Once you determine the group that contains the ball.公仔箱論壇' U1 x# u: l0 g/ U* q2 f
Simply weigh two of the balls