Divide the 12 balls into 4 groups of 3's. 7 E2 r9 x) h) ^! ]1 G. a* v- ]9 t公仔箱論壇Weigh group 1 & 27 D/ p6 u7 _! V5 x* ?7 O3 [. ~
then weigh group 2 & 3 , J, H9 z& _5 f) oIf the results are Equal & Equal, it means the ball with the different weight is in group 4.( B. W4 R+ G5 U; I) A
If the results are Equal & Unequal, it means the ball is in group 3.% w1 U9 C* N; c% r7 k/ }
If the results are Unequal & Equal, it means the ball is in group 1.公仔箱論壇+ J! J1 _7 z5 _, \) V
If the results are Unequal & Unequal, it means the ball is in group 2." M: Z1 h2 v) ^( b
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Once you determine the group that contains the ball. $ ?3 C0 c4 W. ~2 v' r公仔箱論壇Simply weigh two of the balls
發表於 2007-11-15 03:54 PM
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