Switch on the first switch leave it for a minute and then switch it off again.
Three switches outside a windowless room.
A windowless room contains three identical light fixtures each containing an identical light bulb or light globe.
Turn the first two switches on and leave them on for 2 minutes.
Then switch on the second switch and enter the room.
The second switch will be connected to the light that is on the first switch will be connected to the light with the warm bulb and the third switch.
Each bulb is switched off at present.
Feel the two bulbs that are not lit.
Then turn the second switch off and enter the room after half a minute.
Switch on the first switch leave it for a minute and then switch it off again.
Three switches outside a windowless room are connected to three light bulbs inside the room.
The second switch will be connected to the.
You are outside the room and the door is closed.
The warmer of the two.