who can't figure out??????it's just basic math, primary school kid should already know it [-X
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1st: 6 vs 6, find out which side is heavier
" `7 ?/ J' Y, d( _公仔箱論壇2nd: from the heavy side, 3 vs 3, find out which side is heavier9 [: Q9 h( ?0 k' J5 z3 F4 D
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 |