Interview Puzzle
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A Petri dish hosts a healthy colony of bacteria. Once a minute every bacterium divides into two. The colony was founded by a single cell at noon. At exactly 12:43 (43 minutes later) the Petri dish was half full.
At what time will the dish be full?
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- 1 votes
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A bucket is full of water. 50% of the water is taken from it every hour.
How many hours will it take until it is completely empty?Hint:- Answer is not infinite 🙂
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In your bedroom, you have a drawer with 2 red, 4 yellow, 6 purple, 8 brown, 10 white, 12 green, 14 black, 16 blue, 18 grey and 20 orange socks. It is dark in your bedroom, so you cannot distinguish between the colors of the socks.
How many socks do you need to take out of the drawer to be sure that you have at least three pairs of socks of the same color?
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