Divide the 12 balls into 4 groups of 3's.$ {' o. E5 I4 _
Weigh group 1 & 25.39.217.77+ m l. Z; }5 i/ S
then weigh group 2 & 3 ! q3 {* E/ H% SIf the results are Equal & Equal, it means the ball with the different weight is in group 4. 7 i) B) B2 P1 K ?; ^1 D5 cIf the results are Equal & Unequal, it means the ball is in group 3. ( u. R" t9 y5 l- X! CTVBNOW 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。If the results are Unequal & Equal, it means the ball is in group 1.tvb now,tvbnow,bttvb! z }2 x6 X! ~7 f! N) {
If the results are Unequal & Unequal, it means the ball is in group 2. + W& j. a: P: _3 q* S, K7 G公仔箱論壇 7 k+ K1 _( x8 z! l" k( g6 kTVBNOW 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。Once you determine the group that contains the ball.# d, o0 z- |7 Y4 { a
Simply weigh two of the balls