who can't figure out??????it's just basic math, primary school kid should already know it [-X5.39.217.772 E- b! _# y. S1 p# W9 `
2 q& i5 ]4 G+ d% j1st: 6 vs 6, find out which side is heavier4 ?+ ?' V5 w& S0 l/ j, t
2nd: from the heavy side, 3 vs 3, find out which side is heaviertvb now,tvbnow,bttvb7 m G' h* r5 M3 ^% w
3rd: choose 2 out of 3 from the heavier side, if they weight the same, the 1 left is the one, if not, u can see it right away the heavier ball is on the 天秤 |
發表於 2007-2-25 09:20 PM
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發表於 2007-2-27 09:08 PM
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