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Puzzle 5 


What 5-digit number am I thinking of?

It has two prime digits. Digit 3 is the highest digit. Digit 2 is the lowest digit. Digit 1 is higher than the sum of digits 4 and 5. Digit 5 is half of digit 4. Digit 1 is one smaller than digit 3. Digit 5 is between digit 2 and digit 1
The digit 0 doesn't appear, and there are no duplicates. Don't forget that 1 isn't prime, as the prime numbers start with 2, 3, 5, …

Puzzle Copyright © Kevin Stone

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Puzzle 6 


I have three daughters and each has one brother.

How many children do I have?

Puzzle Copyright © Kevin Stone

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Puzzle 7 


This statement is false.

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Puzzle 8 


A well-known seven-letter word can be created, by starting with a single letter and adding a letter, one at a time, then mixing the letters, each time making a proper word. Using the clues below, which are not necessarily in the correct order, can you find all seven words? For example, A, AT, TAR, RATE, etc.

Expressing position within limits of space and time.
The subject of self-consciousness.
Frozen atmospheric vapour falling to earth.
To utter musical sounds with the voice.
Cause to oscillate.
Scattering on the earth.
The breaking of divine law.

Puzzle Copyright © Kevin Stone

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