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Explore · Class 7 · Social Science · From Barter to Money

Siya says a thing's price is set by how useful it is — so water is the most useful and sho

Siya says a thing's price is set by how useful it is — so water is the most useful and should be the most expensive, while diamonds are useless and should be cheap. Her friend says price is not set by usefulness alone. Who is right?

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