Find the bulb for the switch

There is a room with a door (closed) and three light bulbs. Outside the room there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door you can't change them. Identify each switch with its bulb.

Source : My brother &


SV said...

Put the switch 1 on for 10 mins.

Switch it off and put switch 2 to on.

If the light is on - switch 2.

If bulb is warm, switch 1

If bulb is cold, switch 3.


Madhur Kumar Tanwani said...

Is a generalization for 'n' bulbs possible? Without loss in determinism?