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huh?? How tough is it?: ^  y% J$ G& i; M' {( i
1/. break it down to 2 section, 6 balls on each side. Put which every section shows lighter away
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0 {% @% {- H: E- T3 p8 y2/. Break the more heavy section in to 2 sections again, which is 3 balls on each side. Keep the more heavy side again.
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3/. Pick 2 balls and put them on each side from the remaing 3 balls. If they are equal weight, the ball on the table is the more heavy one, if one side is more heavy than the other, that will be the more heavy one.
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: T# ^6 q: T1 ntvb now,tvbnow,bttvbEasy. Tough question? For whom? I did it in 1 minute.