Mind Bender # 4 : Balancing Act

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In January, I was told the bar had to be raised for February. Well, I did my part, and gave you a worthwhile challenge. But most of you let me down — rather badly!

So, let’s see how you go with this month’s Minder Bender . You’ll find it has just one solution — which is so elegantly simple.

*Here is this month’s challenge …*

You have been given 10 bags full of coins.

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All the coins look the same, but those in one bag weigh one gram less than those in the other nine bags.

You have a set of scales, but are permitted to make *only one* weighing. How do you find out which bag contains the lighter coins?

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