Answer:
A grandmother, two mothers and two daughters went shopping together and everyone bought one purse each. How many purses did they bring home all together?
How can you place a pencil on the floor so that no one can jump over it?
On which day of the year do fewest people die?
How do you discover something that does not exist?
Three doctors said that Bill was their brother. Bill said he had no brothers. Who was lying?
When is it bad luck to see a black cat?