Puzzle 1
Would you believe that this amazing sentence contains ninety two letters, one comma and a single question mark?
Puzzle Copyright © Kevin Stone
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Hint
The question is a true statement.
Answer
This is not really a puzzle, merely a curious piece of text.
Puzzle 2
How many squares of any size on this chessboard do not contain a rook?
Puzzle Copyright © Kevin Stone
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Hint
There are no squares of size 5 x 5.
Answer
There are 125 squares without a rook.
Reasoning
61 squares of size 1 x 1
39 squares of size 2 x 2
20 squares of size 3 x 3
5 squares of size 4 x 4
Giving a total of 61 + 39 + 20 + 5 = 125 squares.
Puzzle 3
Which is longer:
250 centimetres
8 feet
Puzzle Copyright © Kevin Stone
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Hint
There are 2.54cm in an inch.
Answer
250 centimetres.
Reasoning
One inch = 2.54cm.
And 1 foot = 12 inches = 30.48cm.
So, 8 feet = 243.84cm.
Puzzle 4
Three people check into a hotel.
They pay £30 to the manager and go to their room.
The manager suddenly remembers that the room rate is £25 and gives £5 to the porter to return to the people.
On the way to the room the porter reasons that £5 would be difficult to share among three people so they keep £2 and give £1 to each person.
Now each person paid £10 and got back £1.
So they paid £9 each, totalling £27. The porter has £2, totalling £29.
Where is the missing £1?
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Hint
Be careful of what you're adding.
Answer
We have to be careful what we are adding together.
Originally, they paid £30, they each received back £1, they now have only paid £27.
Of this £27, £25 went to the manager for the room and £2 went to the porter.
