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There are eight identical-looking coins. Six of them are genuine ones weighing 10 grams each; but the remaining two are fake and weigh 12 grams each. Using just a pan balance, what is the minimum number of trials needed to determine both the fake coins?

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Solution will be available on 10 June 2016

#### Puzzle No. 23

*Posted on 03 June 2016*There are eight identical-looking coins. Six of them are genuine ones weighing 10 grams each; but the remaining two are fake and weigh 12 grams each. Using just a pan balance, what is the minimum number of trials needed to determine both the fake coins?

Click to show/hide hint

Solution will be available on 10 June 2016