wingonwong

take out 10 balls and 5 in each side
. d; c+ k/ ?, L3 F' yif 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.公仔箱論壇: z3 W0 `0 v9 B- F1 j

0 z$ j& U& D8 y  p5.39.217.76if 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.2 ?# a% w+ o! Z) n( G
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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+ X9 n7 V+ I0 m4 Ptvb now,tvbnow,bttvbused less then 1 min to find out the answer....