1. 1st divide to half take the heavier out 8 K+ F+ W7 E9 W$ U- a) u, G2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for) 5 u3 o/ L: J* j/ G3 r/ ]* f( x) stvb now,tvbnow,bttvb3. Same method if is not equal on 2nd try.