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There are 3 lights (in one room) and 3 swtiches (in another
room), one for each, if you only enter into the light room
once. How can you find out which switch corresponds to which
light?

Question Posted / matthews

Answers were Sorted based on User's Feedback



There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / mudassam aslam

first turn one light 1, and keep it on
turn on light 2 and off again so that the bulb gets warm
and turn it off
now enter the room and switch 1 is already on. switch 2
bulb will be warm and remaining switch that ypu havent
touch will be off......its that simple :)

Is This Answer Correct ?    37 Yes 1 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / anubhav

Step 1: Switch on 1st switch. Switch it off after 1 minute.
Step 2: Switch on 2nd switch.
Step 3: Go to light room.
Step 4: The light which is on corresponds to 2nd Switch.
Step 5: The light which is warm but switched off
corresponds to 1st switch.
Step 6: The light which is off and not warm corresponds to
3rd switch.

Is This Answer Correct ?    11 Yes 0 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / megha

first turn on switch 1 and wait for 5-10min then switch off
that and turn on the switch2 then go to room, if bulb is on
the switch2 is the required switch ,if it is in off
condition then touch the bulb if it is warm then the
required switch is 1,else the required switch is 3.

Is This Answer Correct ?    4 Yes 1 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / sharon

3 swithes and 3 lights.
first switch on the first swith and leave it for 10 min.
sec switch on the 2nd switch and enter the room.
the light which is glowing ll be correspond to the on
switch.
one which s warmth must corresponds 2 first switch.
the remaining corresponds to the third switch.

Is This Answer Correct ?    2 Yes 0 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / hasan

very good answer mudassam

Is This Answer Correct ?    2 Yes 1 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / rajeswari

step 1:put the first swith for 5 minutes
srep2: then off the first swith and put the second switch
step3:now go to other rooom
step4:the bulp which was hot is for first switch
step 5: glowing bulp is for second switch another one is for
third switch

Is This Answer Correct ?    1 Yes 0 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / pavithra

switch on the first switch
leave it for 10 min
switch on the second
leave it for 5 min
switch on the third one
now enter into the room
the light which is warm is 2nd switch
the light which is cold corresponds to 1st switch
the light which is blowing belongs to the 3rd switch

Is This Answer Correct ?    0 Yes 0 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / sindhu

first put the switch 1 and let be for 2 sec it will become warm and touch it like that do all

Is This Answer Correct ?    0 Yes 0 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / mei

lights=3
swtiches=3
if i entire in light room one light is on mean that swtich
is corresponting to that light,remaining two is each one ...

Is This Answer Correct ?    1 Yes 6 No

There are 3 lights (in one room) and 3 swtiches (in another room), one for each, if you only enter ..

Answer / manish chouhan

first we on 1 switch and go at light room and check the
bulb. similarly 2&3

Is This Answer Correct ?    2 Yes 7 No

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