anakmalas

this is too easy!!
$ k# K6 |  C( J/ }  Z( p! g; _公仔箱論壇
6 R9 r4 }8 E5 |, {( T9 z9 y( Z1. put 6 at each side.. take the one side which is heavier公仔箱論壇# g- _+ k6 V' g8 L( q
2. put 3 at each side.. also take the heavier side' T9 Y+ i8 F$ b' W  O3 k0 H6 J
3. put 1 at each side.. if the weight balance then the one not put inside is the heavy ball.. else the side which is heavier is the heavier ball..