Reply:
ngocchau
member
REF: 88500
Date: 10/27/2006
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HI ugly girl! this is my anwer.
First divide them into three groups,each group has three marbles.First,take 2 groups and weigh them.If they has the same weight,they don't have the 1.1 ounce marble.If one is heavier,it has.When you find the group which has this marble.Weigh for the second time.Take two marbles and weigh them.If they have the same weigh,the third one is the 1.1 ounce marble.If one is heavier,it is the marble we need to find.
P\S: Is it right?
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