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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