A riddle about a locked room, a bulb and 3 switches?!
Question: A riddle about a locked room, a bulb and 3 switches!?
there is a bulb in a locked room!. there r 3 switches outside the room!. u can on/off the switches as many times as u want while u're standing outside !. BUt u can unlock the door and enter the room only ONCE and then u have to tell which one of the 3 switches turn on/off the bulb!.!.Www@Enter-QA@Com
Answers:
Turn the first switch on and wait 15 minutes, then turn it off!.
Turn the second switch on and go into the room!.
Bulb on!? second switch!.
Bulb off but warm!? first switch!.
Bulb off and cold!? third switch!.Www@Enter-QA@Com
Turn the second switch on and go into the room!.
Bulb on!? second switch!.
Bulb off but warm!? first switch!.
Bulb off and cold!? third switch!.Www@Enter-QA@Com
If there is a crack in the bottom and top of the door, simply turn the switches, and see if the light goes on and through the cracks!. If there is no crack, open the door, do not go inside, and turn the switches!. You are still outside!. Maybe the room is made of glass, so just look through the glass and see which swith lights the bulb!.Www@Enter-QA@Com
Leave the door open and look in from the out sideWww@Enter-QA@Com