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Quiz: Find out the bulbs
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ICE Society Forum Index » Other Forums » Scratch your brains
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instruiteOffline
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Post 3 Posted: Nov 22, 2006 - 04:19 AM Reply with quote Back to top
Post subject: Quiz: Find out the bulbs
Question: In the basement there are 3 light switches in the off position. Each switch controls 1 of 3 light bulbs on the floor above. You may move any of the switches, but you may only go up stairs one time. How can you determine which switch controls each light?

Prize: 50 points to the first correct answer

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ganeshOffline
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Post   Posted: Nov 29, 2006 - 02:25 AM Reply with quote Back to top
Switch on the first switch then any of the three bulb will glow, then according to the order of the switches and bulbs we can find the switch for each other bulbs.

P. Ganesh Pandian

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instruiteOffline
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Post   Posted: Nov 29, 2006 - 03:17 AM Reply with quote Back to top
ganesh wrote:
Switch on the first switch then any of the three bulb will glow, then according to the order of the switches and bulbs we can find the switch for each other bulbs.

P. Ganesh Pandian
Its not necessary that the bulb and switches are not in same order
and when you switch on any bulb you have to go upstairs and check which bulb is glowing
but you can go upstairs only once so when you go upstairs you have to say which switch is for which bulb

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Post   Posted: Dec 03, 2006 - 05:01 AM Reply with quote Back to top
hiii
first swithch on the first switch...
wait for 5 min ...
now off the first one switch on the second one.....
go upstairs and one bulb wil glow...
touch the other two....
the cold bulb is connected to the switch which we never operated and
the hot one is the one which we kept ON for last 5 min....


Is this correct???
do reply

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Post   Posted: Dec 03, 2006 - 08:45 PM Reply with quote Back to top
arjun454 wrote:
hiii
first swithch on the first switch...
wait for 5 min ...
now off the first one switch on the second one.....
go upstairs and one bulb wil glow...
touch the other two....
the cold bulb is connected to the switch which we never operated and
the hot one is the one which we kept ON for last 5 min....


Is this correct???
do reply
yeah this is the right answer
will put the points in your account soon

Congrats :thumbsup:

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instruiteOffline
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Post   Posted: Dec 03, 2006 - 09:06 PM Reply with quote Back to top
Deposited 50 points to your account
Soon you will be bale to use these points for buying things from this site like advertising, emails, subdomains and stuff like that
will let you know when the points for such things are decided
Till then Enjoy posting in the forum Smile

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Post 14 Posted: Dec 11, 2006 - 04:45 AM Reply with quote Back to top
Hello Arjun,

Congrats........

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Post   Posted: Dec 11, 2006 - 04:49 AM Reply with quote Back to top
Then whats the next one...........

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Post   Posted: Dec 12, 2006 - 01:03 PM Reply with quote Back to top
ganesh wrote:
Then whats the next one...........
Will put soon
If you have any put it in a new thread and depending on the complexity of that puzzle I will sponsor some kind of prize (points, email ids, subdomains, etc.)

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Post   Posted: Jan 02, 2007 - 08:51 AM Reply with quote Back to top
first ON any one of the switch
keep ON this switch for 3 minutes.the bulb corresponding to that switch will glow.
now put off this switch
now u ON other switch
the bulbcorresponding to this switch will glow.u go to upstair.
the bulb which is kept on for 3minutes will be hot.u can number that switch
one bulb is glowing.this swich is on
the other bulb is not glowing.this swich is off position

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i am lade srinath,completed engineering in electronics and instrumentation in the year2006.
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