 You have just moved into an old house with a basement and an attic. There are three switches in the attic, marked "on" and "off". The three switches are connected to three bulbs in the basement.
You have to find out which switch is connected to which bulb. You are allowed to play with the switches for as long as you need to, but you may only go down into the basement once to check the bulbs and then say which which switch is connected to which bulb.
 Hint: You don't need any knowledge about electrical wiring to solve this puzzle. |
answer: make one switch turn ON for 20 min are more if you want,then turn OFF the switch and turn ON next switch.
now go to basement and check each bulb weather it was blowing are not and also check weather bulb was hot are not.
1.bulb which was hot and not blowing ----was connected to the switch you turn on earlier for 20 min are more.
2.the bulb which was blowing --------connected to switch secondly turned ON
3.bulb which was not blowing and nor hot -----connected to the switch which was remaining switch.
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