who can't figure out??????it's just basic math, primary school kid should already know it [-X
+ ]9 M2 O! `! M' w a2 |& f公仔箱論壇
! P! \1 O+ e7 I1 X2 i( R- `1st: 6 vs 6, find out which side is heavier
; q/ g& e3 s- ]+ T7 p2nd: from the heavy side, 3 vs 3, find out which side is heavier
, D9 v9 ]2 |0 dtvb now,tvbnow,bttvb3rd: 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 |