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Puzzle 13 


At the local racetrack, Alex was testing the latest car.

During the eight test laps, Alex managed to average the first two laps at 100mph, the next two laps at 102mph, the next two laps at 140mph, and the last two laps at 150mph.

What was the average speed for the entire 8 laps?

Puzzle Copyright © Kevin Stone

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Puzzle 14 


What is the 1,000th prime number?

2, 3, 5, 7, …

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Puzzle 15 


What are the next three digits in this sequence:

7 · 3 · 1 · 8 · 2 · 8 · 5 · 3 · 1 · 5 · 3 · 0 · 3 · 3 · 1 · 4 · 3 · 0 · ? · ? · ?

Puzzle Copyright © Kevin Stone

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Puzzle 16 


Can you find the country hidden in the following paragraph:

The local habitat around a railway track can be very interesting. For example, supporting the track is a sleeper, under which you can find the lesser-spotted great weevil.

Puzzle Copyright © Kevin Stone

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