take out 10 balls and 5 in each side
( e$ w$ B: W8 X2 D( [# _ o! yTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。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.公仔箱論壇1 j) ~ s- I5 H3 x' Q$ { T2 G
( U8 I# q' b0 ?( I4 \6 a, `& Bif 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.
, ?# S5 W7 a7 G8 a# \2 @' S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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used less then 1 min to find out the answer.... |