SiRgOo

put six on each side .. take the heaviler side and put three on each side
5 M8 J+ c, ^$ V+ d" ~' atake two balls out of the heaviler side and put on each side 公仔箱論壇* p) {! s2 Q7 `& e% ^# S& {! M
if they r the same the reminder is the heavy ball otherwise u know which one is the heavy ball