Sherin

Vinay made a Password that consists of 3 digits. None of the digits are the same. How many possible passwords did Vinay choose from?

First give 10 litres and take back 3 litres 3 times it makes 10-9 = 1 litre balance.Then in another pot give 7 litres and take away 3 litres so that makes 7-3 = 4 litres. Then add the milk in the bowls together that becomes 4+1 = 5 litres.