who can't figure out??????it's just basic math, primary school kid should already know it [-X3 E: B: k1 V& j" T* r5 m/ x
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1st: 6 vs 6, find out which side is heavier( E& ]9 s1 w- l' l
2nd: from the heavy side, 3 vs 3, find out which side is heavier
2 v9 F' [9 P( ?+ z% A* z5.39.217.763rd: 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 |