wingonwong

take out 10 balls and 5 in each side
) u& b, K% b) _tvb now,tvbnow,bttvbif 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.
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( |6 H4 n9 U0 `2 s2 s/ E9 cif 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.tvb now,tvbnow,bttvb2 s$ ^- P1 B0 b$ A% |" t- p
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.
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used less then 1 min to find out the answer....