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RE: Brainteaser[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaoc(--nospam--at)seaoc.org'" <seaoc(--nospam--at)seaoc.org>
- Subject: RE: Brainteaser
- From: Frank Yang <yang(--nospam--at)abam.com>
- Date: Fri, 24 Apr 1998 09:06:25 -0700
1. Flip the first switch on for 10 min +/- 30 second. 8^) 2. Flip the first switch off. 3. Flip the second switch on 4. Go up stair right away 5. If the light is on, the second switch control the light 6. If not, touch the light bulb 7. If it is hot, the first switch control the light 8. If it is cool, the third switch control the light HTH Frank Frank Yang, P.E. Senior Engineer BERGER/ABAM Engineers Inc Voice: 206-431-2374 33301 Ninth Avenue South Fax: 206-431-2250 Federal Way, WA 98003-6395 e-mail: yang(--nospam--at)abam.com http://www.abam.com -----Original Message----- From: lsmith(--nospam--at)ursgreiner.com [SMTP:lsmith(--nospam--at)ursgreiner.com] Sent: Friday, April 24, 1998 5:26 AM To: seaoc(--nospam--at)seaoc.org Subject: Brainteaser OK, this has nothing to do with engineering, but you do need to think to figure it out, so, I believe we all qualify. According to a friend of mine, this was a question from a MENSA test: There is a switchplate with three (3) switches in the basement of a house. Up the stairs in a room on the ground floor is a light bulb. The new owner of the house knows that the light bulb is controlled by one of the three switches and is in the basement. With only one trip up the stairs, how can the new owner determine which switch controls the light bulb?
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