wingonwong

take out 10 balls and 5 in each side
# H; i2 w2 v% t* e1 V  eif both side balance mean the other 2 balls one of them must be the heavy one then just take them to weight will find out which one is heavier.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。9 y; y; v/ y. X
公仔箱論壇9 U% b8 l, @" s, r' ^
if the heavy ball is inside the 10 balls, take out 4 balls from the heavier side which had 5 balls to weight 2 balls in each side.7 E& B" j& @; Y6 k9 Z
if both side balance, which mean the one left is heavy one if not, just take the heavier side to weight will find out which one is the heaviest one.
- k/ w7 i- T) Z5 v公仔箱論壇5.39.217.76: ?2 q5 |3 @. s' I
used less then 1 min to find out the answer....