There are five sisters in a room. Anne is reading a book, Margaret is cooking, Kate is playing chess, and Marie is doing the laundry. What's the fifth sister doing?
Playing chess with Kate.
An electric train is moving North at 100 mph and the wind is blowing at 60km from the East. Which way does the smoke blow?
There is no smoke, the train is electric.
There are two ducks in front of a duck, two ducks behind a duck and a duck in the middle. How many ducks are there?
Three ducks.