1. 1st divide to half take the heavier out : C; W% @# }7 R: i2 A$ Y3 X0 n4 xtvb now,tvbnow,bttvb2. 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) 7 O7 P( U3 F" q- F& x3. Same method if is not equal on 2nd try.