Enter your email address:

October 24, 2008

Rectangular Cake Puzzle

How do you cut a rectangular cake into
two equal pieces when someone has already
removed a rectangular piece from it?
The removed piece can be of any size
or orientation. You are allowed just one
straight cut.

October 20, 2008

Logic Puzzles

You've been asked to buy 100 squeegies, using 100
dollars to do so. You may buy no more or less than
100 squeegies, and the total price must be exactly
100 dollars. There is no sales tax. Red squeegies
cost $6.00. Yellow squeegies cost $3.00. Blue
squeegies cost $0.10. How many of each must you buy?

October 15, 2008

Microsoft's Puzzles

How many points are there on the globe
where, by walking one mile south, one
mile east, and one mile north,you reach
the place where you started?

October 14, 2008

River Crossing Puzzles

A farmer is returning from market, where he
bought a she-goat, a wolf and cabbage. On the
way home he must cross a river. His boat is
little, allowing him to take only one of the
three things. He can't keep the she-goat
and the cabbage together (because the she-goat
would eat it), nor the she-goat with the wolf
(because the she-goat would be eaten).
How shall the farmer get everything on the
other side (without any harm)?

Cannibals and Missionaries

Three missionaries and three cannibals wanted
to get on the other side of a river. There was
a little boat on which only two of them can fit.
There can never be on one side more cannibals
than missionaries because of a possible tragedy.

What is the next Number


Einsteins Riddles

There are 5 ships in a port.

1. The Greek ship leaves at six and carries
2. The ship in the middle has a black chimney.
3. The English ship leaves at nine.
4. The French ship with a blue chimney is to
the left of a ship that carries coffee.
5. To the right of the ship carrying cocoa
is a ship going to Marseille.
6. The Brazilian ship is heading for Manila.
7. Next to the ship carrying rice is a ship
with a green chimney.
8. A ship going to Genoa leaves at five.
9. The Spanish ship leaves at seven and is to
the right of the ship going to Marseille.
10. The ship with a red chimney goes to Hamburg.
11. Next to the ship leaving at seven is
a ship with a white chimney.
12. The ship on the border carries corn.
13. The ship with a black chimney leaves at eight.
14. The ship carrying corn is anchored next
to the ship carrying rice.
15. The ship to Hamburg leaves at six.

Which ship goes to Port Said? Which ship carries tea?

October 13, 2008

Reasoning Puzzles

97 baseball teams participate in an annual state
tournament. The champion is chosen for this
tournament by the usual elimination scheme. That is,
the 97 teams are divided into pairs, and the two
teams of each pair play against each other. The
loser of each pair is eliminated, and the remaining
teams are paired up again, etc. How many games must
be played to determine a champion?

October 5, 2008

Critical thinking puzzle

1. The first question with B as the correct answer is:

A. 1
B. 4
C. 3
D. 2

2. The answer to Question 4 is:

A. D
B. A
C. B
D. C

3. The answer to Question 1 is:

A. D
B. C
C. B
D. A

4. The number of questions which have D as the correct answer is:

A. 3
B. 2
C. 1
D. 0

5. The number of questions which have B as the correct answer is:

A. 0
B. 2
C. 3
D. 1

Brain Teasers

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 bellboy to return to the people. On the way to
the room the bellboy reasons that £5 would be
difficult to share among three people so he pockets
£2 and gives £1 to each person. Now each person
paid £10 and got back £1. So they paid £9 each,
totalling £27. The bellboy has £2, totalling £29.
Where is the missing £1?