SiRgOo

put six on each side .. take the heaviler side and put three on each side 公仔箱論壇. @3 y/ l0 e: F
take two balls out of the heaviler side and put on each side & b- Z- e% M( {0 D5 G. m8 u7 m
if they r the same the reminder is the heavy ball otherwise u know which one is the heavy ball