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Random Puzzles 


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Puzzle 1 


A large fresh water reservoir has two types of drainage system: small pipes and large pipes.

6 large pipes, on their own, can drain the reservoir in 12 hours.

3 large pipes and 9 small pipes, at the same time, can drain the reservoir in 8 hours.

How long will 5 small pipes, on their own, take to drain the reservoir?

Puzzle Copyright © Kevin Stone

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Puzzle 2 


Place a horizontal or a vertical line into every blank square.

Each number tells you the total length of the lines connected to that square.

Puzzle Copyright © Johan de Ruiter

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Puzzle 3 


My 6, 7, 3 is a tear to a newspaper.
My 5, 4, 1 is damper than moist.
My 1, 7, 6, 4 is to become weary.
My 5, 7, 6, 9 helps electricity to flow.
My 8, 10, 2 is an attempt at this puzzle.

My whole might have been used to create puzzles.

Puzzle Copyright © Kevin Stone

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Puzzle 4 


Can you find three common words which …

… contain EE twice?

Puzzle Copyright © Kevin Stone

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