wingonwong

take out 10 balls and 5 in each side
8 p' K6 l2 T9 M- c3 E" E& q- x9 G- tif 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.tvb now,tvbnow,bttvb6 k7 K! d: T  [9 |6 _! {
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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.公仔箱論壇% r/ ~0 o& u  D% x) c" j
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.
6 Z3 V7 E6 k; g$ ]! rtvb now,tvbnow,bttvb
1 b$ D0 u! F! Yused less then 1 min to find out the answer....