Puzzle 1
Can you find three consecutive prime numbers …
… which total 190,747 when multiplied together?
Puzzle Copyright © Kevin Stone
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Hint
Try finding the cube root of 190,747.
Answer
53, 59, and 61.
Reasoning
Start by taking the cube root of 190,747, which is approximately 57.56.
The next highest prime number is 59:
190,747 ÷ 59 = 3,233
Let's try the next prime number, which is 61:
3,233 ÷ 61 = 53
53, 59, and 61, are all prime, and are consecutive, so this is the answer.
Double-Checking
53 x 59 x 61 = 190,747
Puzzle 2
If …
7/28 of 64 is 16,
and 9/12 of 100 is 75,
and 3/9 of 33 is 11,
what is 5/15 of 45?
Puzzle Copyright © Kevin Stone
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Hint
This puzzle is perhaps easier than it first appears.
Answer
15.
Using normal mathematics!
5/15 of 45 = 1/3 of 45 = 15.
Puzzle 3
Moving from letter to letter using the moves of a chess knight, can you find the letters 'PUZZLES' in order?
| Z |
E |
Z |
S |
Z |
P |
S |
| U |
P |
S |
P |
L |
P |
Z |
| S |
U |
L |
U |
U |
E |
U |
| E |
E |
P |
U |
S |
U |
P |
| P |
Z |
L |
L |
U |
P |
Z |
| Z |
U |
Z |
S |
U |
L |
P |
| E |
P |
Z |
Z |
E |
L |
U |
Note: this puzzle is not interactive, and the squares cannot be clicked.
The moves of a knight are:

Puzzle Copyright © Kevin Stone
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hint
answer
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Hint
It might be easier to find the S first.
Answer
Start with the P in the 5th row, 6th column:
Puzzle 4
Take a word from the first column, and a word from the second column.
You will now have 5 lots of eight letters, and each of these eight letters is an anagram of an animal.
What are the 5 animals?
soot tent
most then
much tire
area mare
leap pink
Puzzle Copyright © Kevin Stone
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hints
answers
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/puzzle/zskp
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Hints
Try: soot + tire, most + mare, much + pink.
Answers
soot + tire = tortoise
most + mare = marmoset
much + pink = chipmunk
area + tent = anteater
leap + then = elephant