Please turn off your computers……we will play a little game first

The Light Bulb Puzzle

In one room of a house are three separate switches (1, 2 and 3) that are connected in some order to three light bulbs (A, B and C) in a second room. Is it possible to visit each room once and only once and determine which switches control which lights? (You may not use a screwdriver or unscrew light bulbs to gather clues).

?A B C 1 2 3

The Light Bulb Puzzle

• Hint #2• Time is a factor in solving this

problem…

The Light Bulb Puzzle

• Hint #2• How can you tell if a light bulb has

just been turned off?

The Light Bulb Puzzle

• Hint #3• A light bulb can be

1. Turned on2. Turned off, and cold…3. Turned off, and warm…

The Light Bulb Puzzle

• Can you solve a four-bulb, four-switch version of this puzzle…?