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Puzzle 5 


What is the smallest positive integer, which …

… when multiplied by 7 gives a number consisting of only 6's?

Puzzle Copyright © Kevin Stone

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Puzzle 6 


Sports Dayall logic puzzles

During the recent BrainBashers school sports day, four students were competing in the 400 metres hurdles.

Official figures mysteriously went missing just after the event, however, various spectators could remember the following information.

Alex won and wore red.
The student wearing number 1 came third.
Billie beat the student in yellow, but wasn't wearing number 2.
Only one student finished in the same position as the number they wore, but they didn't wear red.
Emery beat the student wearing number 3, and Glen wore yellow.
The student in green wore number 2.
A spectator remembered that one student wore blue, but couldn't remember anything else about them.
Can you determine the positions the students finished in, along with the numbers and colours they wore?

Puzzle Copyright © Kevin Stone

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Puzzle 7 


The legendary BrainBashers calendar had a recent bug. Here is a listing showing the number of days in each month:
January    107
February   68
March      135
April      15
May        133
June       104
July       104
August     16
September  ?

How many days did it show for September?

Puzzle Copyright © Kevin Stone

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Puzzle 8 


You have a barrel, filled to the top with water, which weighs 150 pounds.

What can you add to the barrel in order to make it lighter?

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