This is a difficult electric bulb on off the puzzle.
In a room there are 100 bulbs which are all off . Now we have 100 people in the room.
First person goes and switches on all the bulbs.
Second person goes and again switches off all the even numbered bulbs.
Third person goes and again switches on every third bulb.
Fourth person goes and again switch off every fourth bulb.
This continues till 100 people...
Now after this, how many bulbs would still be lit ?
Tease your brain to solve this difficult riddle ! :)
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| 100 bulbs puzzle |
In a room there are 100 bulbs which are all off . Now we have 100 people in the room.
First person goes and switches on all the bulbs.
Second person goes and again switches off all the even numbered bulbs.
Third person goes and again switches on every third bulb.
Fourth person goes and again switch off every fourth bulb.
This continues till 100 people...
Now after this, how many bulbs would still be lit ?
Tease your brain to solve this difficult riddle ! :)
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