A lily pad on a quiet pond doubles in area every day. If it takes 48 days for the lily pad to completely cover the entire surface of the pond, on which day was the pond exactly half-covered?
Day 47
Since the lily pad doubles in size each day, it was half its full size on the day immediately preceding full coverage (48 - 1 = 47).
About this riddle
Logic riddles give you a few facts and ask what must be true. List what you know, cross out what cannot be, and see what is left.
Difficulty: Easy. More like this: Logic riddles with answers or try Einstein's Logic Grid for a different kind of puzzle.
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