Question: At school Joe has three friends: Tim, George and Paige. Two of them play football, two play tennis, and two play golf. The friend who doesn't play golf doesn't play tennis and the one who doesn't play football doesn't play golf. Which sports does each person play?
Hint: Think about the implications of the statement: 'The friend who doesn't play golf doesn't play tennis and the one who doesn't play football doesn't play golf'.
Answer: George and Tim play all three sports and Paige plays none.
This is assuming girls do not play football. If the school did have a girl's football league all we would know is that one of the three play no sports and the others play all three.
Question: There is a farmer who has three sons. Nearing his death, he asked his three sons to find two objects that can fill the room he's in. The one who can deliver will be chosen as his heir. So the oldest son goes to the market to get hay while the middle son go get leaves. The youngest son goes to a shop and buys two things that he put in his pocket. The oldest son's hay only fills half the room, the middle son's leaves fills 2/4 quarters of the room, while the youngest fills the room with his two objects. Question: What are the two objects that the youngest son used to fill the room?
Answer: A match and a candle.