All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > General
100 Lights and 100 Switches (Posted on 2022-11-28) Difficulty: 3 of 5
• There are precisely 100 lights in a huge room.
• A switch panel outside the room has 100 switches each corresponding to one light in the room.
• None of the switches or lights are labeled, so its extremely difficult to identify which switches turns on which light.
• Stan is standing outside of the room and his task is to map each switch to its corresponding light using a marker pen.
• He has to accomplish this mapping in a minimum number of trips to the room.
• Initially all the lights are turned off.

Determine the minimum number of times Stan needs to enter the room to complete the mapping of each switch to its corresponding light.

• To check the state of a light Stan must enter the room. He cannot check it from outside.
• There is nothing related to the heating of a light.

See The Solution Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
No Subject | Comment 3 of 6 |

  Posted by K Sengupta on 2022-11-30 00:44:30
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (3)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (11)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information