Math Puzzles and Games
6. Let's say some primitive organisms
divide themselves every minute in two equals which also divide
the next minute and so on. The saucer in which we started
observing this process was full at 12.00. When was it full to
the half?
Solution: The saucer was half full at 11.59  the next minute
there will be twice as many of them there (so full at 12.00).
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