If a lily pad doubles in size every day and covers a pond completely in 30 days, on what day was the pond exactly one-quarter covered?
Day 28
If it doubles every day, then on day 29 it is half covered, and on day 28 it is one-quarter covered.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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