beggerX

this one is really simple, i think divide it as half (6-6)
" p0 r! i5 H1 T7 l# l7 oweigh 3-3 , if one side is heavier, weigh 1-1 -> you will know which one is heavier
0 K0 h7 W, e9 M公仔箱論壇If the above doesnt work5.39.217.762 d4 i8 ^8 V/ I! Z$ n8 g7 V
weigh 3-3 of the other group (2nd chance)
, k9 Y4 t; \, {( Q' Ytvb now,tvbnow,bttvbthen weigh 1-1 from heavier group (3rd chance)-> you will know which is heavier