who can't figure out??????it's just basic math, primary school kid should already know it [-X8 X5 i; x& V% ?
1 d: u" w4 M: P: T* ~) f5.39.217.761st: 6 vs 6, find out which side is heavier
: C6 K( B5 C1 X2nd: from the heavy side, 3 vs 3, find out which side is heavier1 ~2 y5 |, p1 p
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 |