Bulbs This is one of my favorite free printable logic puzzles with a real life solution. There are three switches downstairs. Each corresponds to one of the three light bulbs in the attic. You can turn the switches on and off and leave them in any position. How would you identify which switch corresponds to which light bulb, if you are only allowed one trip upstairs? Keep the first bulb switched on for a few minutes. A Ping-Pong Ball in a Hole Your last good ping-pong ball fell down into a narrow metal pipe imbedded in concrete one foot deep. All the tools are random things that are not going to help you. A Man in an Elevator A man who lives on the tenth floor takes the elevator down to the first floor every morning and goes to work. The man is of short stature. The Ball How can you throw a ball as hard as you can and have it come back to you, even if it doesn't bounce off anything? Throw the ball straight up in the air. The Magnet Virile Microbes The dish will be full at 12:44. Try this.
• Critical Thinking