Divide the 12 balls into 4 groups of 3's.tvb now,tvbnow,bttvb) N* L! x6 e% X% `
Weigh group 1 & 2
7 W4 x" E- ~5 C$ K% jtvb now,tvbnow,bttvbthen weigh group 2 & 36 s% O l- [/ \' A2 C3 k
If the results are Equal & Equal, it means the ball with the different weight is in group 4.
9 ~% a0 ?+ k" O; Ytvb now,tvbnow,bttvbIf the results are Equal & Unequal, it means the ball is in group 3.9 b4 ^& ~- V; {' g w; \2 Y+ A) V$ {
If the results are Unequal & Equal, it means the ball is in group 1.
0 E3 ]6 K6 r, c+ Q+ f/ a; r3 d' r: _If the results are Unequal & Unequal, it means the ball is in group 2.5.39.217.772 `& A T: q1 k! c3 d
- G3 f- u: f( Q2 P2 R1 XOnce you determine the group that contains the ball.2 B* Z8 T. n; I
Simply weigh two of the balls |
發表於 2007-11-15 03:54 PM
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