There are two containers: One housing a litre of water, the other a litre of milk. A spoonful of water is carefully transferred from the first container to the second, mixed thoroughly, and then a spoonful of the resulting mixture is returned to the first container. Which is greater, the amount of water in the … Read more
The owner of a fruit orchard has collected three barrels of fruit. There is one barrel of apples, one barrel of pears and one barrel that contains a mixture of apples and pears. The barrels are all labelled. One label reads “apples”, another reads “pears” and the other reads “apples and pears”. Unfortunately, none of … Read more
A bee keeper needs to cross a river to collect honey from his bee hives. The only way to cross the river is in a little boat. To complicate matters, the bee keeper is being accompanied by a mouse, a cat and a dog. He can only fit one of these in the boat with … Read more