who can't figure out??????it's just basic math, primary school kid should already know it [-X% x4 n& ?& _# [3 s
; n' C) \7 B2 N, n8 l1st: 6 vs 6, find out which side is heaviertvb now,tvbnow,bttvb7 j) H2 m, V! M( v+ A9 ?
2nd: from the heavy side, 3 vs 3, find out which side is heavier
/ R& S$ }) E: I/ E; T) d3rd: 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 |