I have got 100 lamp bulbs with 100 switches. Initially all switches are turned off. After that I change the position of each switch. After that I change the position of each second, third, fourth... hundredth switch. How many bulbs will light up?
+26367 have got 100 lamp bulbs with 100 switches. Initially all switches are turned off.
After that I change the position of each switch. After that I change the position of each second, third, fourth... hundredth switch.
How many bulbs will light up?
I assume:
All lamps will light up on a perfect square position: {1,4,9,16,25,36,49,64,81,100} = 10 lamps will light up.
