wingonwong

take out 10 balls and 5 in each side; r  d" y. ~6 ]! f0 Z
if 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.
9 \( s/ a+ N! s4 ^1 ]公仔箱論壇公仔箱論壇9 c6 b7 o" Y  ]% H' d2 K
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.
  y; V# f3 ]. I6 r% N8 c公仔箱論壇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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