[In recent years research has suggested that exercising our brains can have a positive effect as we grow older. Here are a few puzzles for you to play with in the order of increasing difficulty. The correct answers will be posted tonight at 5:55 along with my source for these brain teasers. There are two correct answers for the fourth question. Feel free to post your answers in the comments section below.]
A stamp collector paid $100,000 for a stamp
and then deliberately destroyed it. Why?
A father took his son to hospital for
emergency treatment after an accident.
The doctor on seeing the boy, exclaimed,
“I can’t operate on him – he’s my son!”
How can this be? [The son was not adopted, nor a step-son.)
What is it?:
the people who make it don’t want it,
the people who buy it don’t use it for themselves and
the people who use it don’t know.
A game-show contestant reaches the final challenge: Two security guards are each holding identical closed brief cases. In one there is $1m of banknotes; in the other a few of last week’s newspapers. The guards know what is in each case. The contestant is told that one guard will lie and the other will tell the truth – but not which guard is which. He is then told that he can ask one guard just one question, and then he must choose one case or the other. What question should he ask?
[The source and answers will be posted this evening. Good thinking!]