Mice can multiply very fast. Adult mice can give birth once every month, and baby mice grow into adult mice in just two months after they are born.If you would buy a baby mouse just after it was born, how many mice would you have in 10 months?

In a hospital there is a consumption of 1350 litres of milk for 70 patients for 30 days. How many patients will consume 1710 litres of milk in 28 days.