There are two sisters: one gives birth to the other and she, in turn, gives birth to the first. Who are the two sisters?
I have two coins, one is marked George I and one is marked George IV. One is genuine but one is a forgery. Which is the forgery?
What coin doubles in value when half is deducted?
Which bank is not used for storing money?
Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?
Why are foot injuries so serious?