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Puzzle 1 



My first is in bridge, but not in ridge.

My second is in awake, and in mistake.

My third is in danger, but not in ranger.

My fourth is in strange, and in orange.

My fifth is in spline, and in nine.

My last is in river, and in diver.

My whole likes the darkness.

What am I?

Puzzle Copyright © Kevin Stone

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Puzzle 2 



Two explorers went wandering one day, one mile south, then one mile east, then one mile north, and they were back where they started.

What colour was the bear that was eating their sandwiches?

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Puzzle 3 



Pre-Championship Rehearsal - Logic Puzzles

At last month's rehearsal, four top athletes competed in two 400-metre qualifiers.

As the results were expected to be mislaid, various notes were taken to ensure the accuracy of the overall placings:

No one finished both races in the same position.
In both races, Sam beat the runner whose surname was Watson.
Billie Taylor came third in the second race, and Pat came last in the first race.
In the second race, the athlete whose surname was Arnold won, and the athlete whose surname was Bowler came last.
In the first race, Billie beat Jamie, but Jamie beat Sam.
Can you determine who finished where in each of the races?

Puzzle Copyright © Kevin Stone

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Puzzle 4 



Can you find a five-digit number that has no zeros, and no digit is repeated, where:

The first digit is a prime number.
The second digit is the fifth digit minus the first digit.
The third digit is twice the first digit.
The fourth digit is the third digit plus three.
The fifth digit is the difference between the first digit and the fourth digit.
Don't forget that 1 isn't prime, the prime numbers start with 2, 3, 5...

Puzzle Copyright © Kevin Stone

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