1) divide the number of balls into 3 sets of 4.
4 E- x& H5 I- M7 }6 h5.39.217.762) take two sets and compare their weight against each other, then if they are balance, that mean the heavier ball is in the third sets, otherwise, the ball is in the set that is heavier on the sacle.tvb now,tvbnow,bttvb+ K0 P& S9 u- l# ^% ? O3 E! t$ ^
3) divide the set which contain the heavier ball into 2 sets, then compare their weight, the heavier set of balls should contain that heavier ball.5 @4 y" m% D3 T% [0 R; k
4) lastly compare the two remaining ball to get the result. |
發表於 2008-5-7 07:38 AM
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感觉的出来就是不知道....
