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A shopkeeper wants to buy several weight stones for his pan balance; using which he would be to able to measure all multiples of 1 kg, starting from 1 kg upto 10 kg. There are stones of every weight available for him to purchase. What is the minimum number of stones that the shopkeeper will have to buy?

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#### Puzzle No. 22

*Posted on 27 May 2016*A shopkeeper wants to buy several weight stones for his pan balance; using which he would be to able to measure all multiples of 1 kg, starting from 1 kg upto 10 kg. There are stones of every weight available for him to purchase. What is the minimum number of stones that the shopkeeper will have to buy?

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Click to show/hide explanation