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Brain Teasers and Puzzles 


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Puzzle 465 


In each of these sentences, can you replace the missing number.

The number is written as a word (e.g. five, twenty-four, thirty-three), and each sentence is correct after the replacement.

This sentence contains ? letters, one hyphen, two commas and a full stop.
Interestingly, this sentence contains ? letters, one hyphen, three commas and the final full stop.
Finally, this sentence contains ? letters, one hyphen, three commas and one full stop.

Puzzle Copyright © Kevin Stone

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Puzzle 466 


Paintballing Weekendall logic puzzles

During an exciting weekend of paintball, four friends were having great fun.

The paintballs came in blue, green, yellow, and red.

Coincidentally, the four friends had T-shirts in those same colours.

Billie used blue paintballs.
The person in the green T-shirt used yellow paintballs.
Charlie was not wearing a red T-shirt.
Drew used green paintballs and wore a blue T-shirt.
Alex was the only person who used paint which was the same colour as their T-shirt.
Can you tell which colour paint they each used and the colour of their respective T-shirts?

Puzzle Copyright © Kevin Stone

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Puzzle 467 


The Winter Festival is well underway and BrainBashers control is working out the plane times for the return journeys.

Unfortunately, the BrainBashers timetable software is playing up again and has worked out the times incorrectly, as shown below.
France    4.00pm
Mexico    3.00pm
Jamaica   5.00pm
Japan     1.00pm

According to the software, at what time is the return trip to Finland?

Puzzle Copyright © Kevin Stone

workings hint answer print

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Puzzle 468 


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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