Brain Teasers
Light Bulb Flipping
Assume you have a switch to a light bulb. It starts out off. After half a minute, you flip the switch. After a quarter of a minute you flip the switch again. And do so after an eighth, a sixteenth, and a thirty-second, and so on. At the end of the minute, is the bulb on or off?
Hint
There could be three answers here.Answer
There are three answers depending on how you think about it.1) I never said the switch was flipped again, so it would be on.
2) No Light bulb could go that fast so most likely it would be burned out.
3) You can't answer this because the light switch would be flipped infinitely many times before the minute was over. And infinity isn't odd or even.
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