this one is really simple, i think divide it as half (6-6)
' X+ R, X- I1 l; I3 C$ jweigh 3-3 , if one side is heavier, weigh 1-1 -> you will know which one is heavier7 A* ]& X5 O; z/ ~$ u" l4 E d" c
If the above doesnt work, F# H. V) x/ ?7 |6 ^9 B' y. K- F. `' R
weigh 3-3 of the other group (2nd chance)tvb now,tvbnow,bttvb* O+ i! g: Z- I. m2 G9 U* ]5 _& d
then weigh 1-1 from heavier group (3rd chance)-> you will know which is heavier |