Comments on: A windowless room has 3 lightbulbs. You are outside the room with 3 switches, each controlling one of the lightbulbs. If you can only enter the room one time, how can you determine which switch controls which lightbulb?

Comments on: A windowless room has 3 lightbulbs. You are outside the room with 3 switches, each controlling one of the lightbulbs. If you can only enter the room one time, how can you determine which switch controls which lightbulb? http://www.ibankingfaq.com/interviewing-brainteasers/a-windowless-room-has-3-lightbulbs-you-are-outside-the-room-with-3-switches-each-controlling-one-of-the-lightbulbs-if-you-can-only-enter-the-room-one-time-how-do-you-determine-which-switch-contr/ Learn about investment banking...become an investment banker Tue, 07 Feb 2012 03:48:31 +0000 hourly 1 http://wordpress.org/?v=3.3.1