The person is inside the hall where there are three switches next to person.Down the hall there is a room inside it there
are three light bulbs.Each switch is assigned to each bulb.How could the person know which switch is for which bulb if only one time he get it into the room?

• first switch on the 1st switch
  after 10 min off the 1st switch and on the 2nd switch and get into the room
  the bulb which is giving light is belongs to the 2nd switch and touch the remaining two bulbs . in those the hot one is 1st bulb and the other one is 3rd bulb
• 11 years agoHelpfull: Yes(3) No(0)