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Random Puzzles 


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Puzzle 1 


At the recent BrainBashers code-breaking convention, Billie Brisk won the speed contest.

The following sentence was deciphered in a record time of 123 seconds.

What was the well-known saying, and how has it been encrypted?
MOOT CYNA SKOO IOPS EHTL TORB YCBH

Puzzle Copyright © Kevin Stone

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Puzzle 2 


What number comes next in this sequence:

302 · 202 · 102 · 002 · 991 · ?

Puzzle Copyright © Kevin Stone

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Puzzle 3 


Can you find the country hidden in the following sentence:

If a Dalmatian dog can catch five balls in five minutes, four balls in four minutes, and three balls in three minutes, can a Dalmatian dog catch two balls in two minutes?

Puzzle Copyright © Kevin Stone

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Puzzle 4 


Alex and Billie have to empty all of the bookshelves in the library, and move the books into storage.

Alex, on her own, can empty the bookshelves in 18 hours.

Billie, on her own, can also empty the bookshelves in 18 hours.

Unfortunately, Drew likes to move the books from storage back onto the bookshelves, and she can refill the bookshelves in 36 hours.

How long will it take the three of them, working at the same time, to empty the bookshelves?

Puzzle Copyright © Kevin Stone

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