who can't figure out??????it's just basic math, primary school kid should already know it [-X
3 k ?" A+ t( u) T3 _. K! B; ~, Q. ^- Z
1st: 6 vs 6, find out which side is heavier
" E7 i* f F* ]& v6 g& G: O9 t7 L2nd: from the heavy side, 3 vs 3, find out which side is heavier
g1 ?' E" Q4 w5.39.217.763rd: 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 |