A ten meter rope is looped through a pulley attached to the ceiling.
Half the rope dangles on one side, the other half on the other.
At one end of the rope is tied a one kilo bunch of bananas.
At the other end of the rope is a one kilo monkey.If the monkey
tries to climb the rope, what will happen?
March 24, 2008
Einstein's Puzzle
FACTS OF THE PUZZLE
[This quiz was made up by Albert Einstein and
according to him 98% will not solve it.]
There are five houses in five different colours.
In each house lives a person of a different nationality.
These five owners drink a certain beverage, smoke a
certain brand of cigarette and keep a certain pet.
No owners have the same pet, smoke the same brand
of smoke or drink the same drink.
HINTS
1] The Brit lives in the red house.
2] The Swede keeps dogs as pets.
3] The Dane drinks tea.
4] The green house is on the left of the white house.
5] The green house owner drinks coffee.
6] The person who smokes Pall Mall rears birds.
7] The owner of the yellow house smokes Dunhill.
8] The man living in the house right in the center
drinks milk.
9] The Norwegian lives in the first house.
10] The man who smokes Blend lives next to the one
who keeps cats.
11] The man who keeps horses lives next to the man
who smokes Dunhill.
12] The owner who smokes Blue Master drinks beer.
13] The German smokes Prince.
14] The Norwegian lives next to the blue house.
15] The man who smokes Blend has a neighbour who
drinks water.
The question is: WHO OWNS FISH?
[This quiz was made up by Albert Einstein and
according to him 98% will not solve it.]
There are five houses in five different colours.
In each house lives a person of a different nationality.
These five owners drink a certain beverage, smoke a
certain brand of cigarette and keep a certain pet.
No owners have the same pet, smoke the same brand
of smoke or drink the same drink.
HINTS
1] The Brit lives in the red house.
2] The Swede keeps dogs as pets.
3] The Dane drinks tea.
4] The green house is on the left of the white house.
5] The green house owner drinks coffee.
6] The person who smokes Pall Mall rears birds.
7] The owner of the yellow house smokes Dunhill.
8] The man living in the house right in the center
drinks milk.
9] The Norwegian lives in the first house.
10] The man who smokes Blend lives next to the one
who keeps cats.
11] The man who keeps horses lives next to the man
who smokes Dunhill.
12] The owner who smokes Blue Master drinks beer.
13] The German smokes Prince.
14] The Norwegian lives next to the blue house.
15] The man who smokes Blend has a neighbour who
drinks water.
The question is: WHO OWNS FISH?
March 13, 2008
4 Quarts
You have a 3-quart bucket, a 5-quart bucket, and an infinite
"supply of water. How can you measure out exactly 4 quarts?
"supply of water. How can you measure out exactly 4 quarts?
Two jars, 50 red marbles and 50 blue marbles ?
You have two jars and 100 marbles. Fifty of the
marbles are red, and 50 are blue. One of the jars will
be chosen at random, then 1 marble will be withdrawn
from that jar at random. How do you maximize the chance
that a red marble will be chosen? (You must place all 100
marbles in the jars.)What is the chance of selecting
a red marble when using your scheme?
marbles are red, and 50 are blue. One of the jars will
be chosen at random, then 1 marble will be withdrawn
from that jar at random. How do you maximize the chance
that a red marble will be chosen? (You must place all 100
marbles in the jars.)What is the chance of selecting
a red marble when using your scheme?
Four Dogs
There are four dogs, each at a corner of a large square.
Each of the dogs begins chasing the dog clockwise from it.
All of the dogs run at the same speed. All continuously
adjust their direction so that they are always heading
straight toward their clockwise neighbor. How long does it
take for the dogs to catch each other? Where does this
happen?
Each of the dogs begins chasing the dog clockwise from it.
All of the dogs run at the same speed. All continuously
adjust their direction so that they are always heading
straight toward their clockwise neighbor. How long does it
take for the dogs to catch each other? Where does this
happen?
Rectangular Cake
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 pf any size or orientation.
You are allowed just one straight cut.
someone has already removed a rectangular piece from it?
The removed piece can be pf any size or orientation.
You are allowed just one straight cut.
Money puzzle
Mike and Todd have $21 between them. Mike has $20 more
than Todd. How much does each have?
than Todd. How much does each have?
March 8, 2008
Microsoft's Puzzle2
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?
mile south, one mile east, and one mile north,you reach
the place where you started?
Microsoft's Puzzle
Why is it that, when you turn on the hot water in a hotel, the
hot water comes out instantly?
hot water comes out instantly?
Three Ants
There are three ants at the three corners of a regular
triangle. Each ant starts moving on a straight line toward
another, randomly chosen corner. What is the probability
that none of the ants collide?
triangle. Each ant starts moving on a straight line toward
another, randomly chosen corner. What is the probability
that none of the ants collide?
March 7, 2008
3 light switches
There are three switches in a hallway. One switch controls a
light fixture in a room at the far end of the hall. The door
to the room is closed, and you can't see whether the light
is on or off. You need to find out which of the three switches
controls the light. How can you be certain of finding that out,
making just one trip to the room?
light fixture in a room at the far end of the hall. The door
to the room is closed, and you can't see whether the light
is on or off. You need to find out which of the three switches
controls the light. How can you be certain of finding that out,
making just one trip to the room?
Fuse Problem
You have two lengths of fuse. Each will burn for exactly one
hour. But the fuses are not necessarily identical and do
not burn at a constant rate. There are fast-burning sections
and slow-burning sections. How do you measure forty-five
minutes using only the fuses and a lighter?
hour. But the fuses are not necessarily identical and do
not burn at a constant rate. There are fast-burning sections
and slow-burning sections. How do you measure forty-five
minutes using only the fuses and a lighter?
March 6, 2008
How Many Eggs
A woman was carrying a basket of eggs to market when a
passer-by bumped her. She dropped the basket and all
the eggs broke. The passer-by, wishing to pay for
her loss, asked, 'How many eggs were in your basket?
I don't remember exactly, the woman replied, but I do
recall that whether I divided the eggs by 2,3,4,5 or 6
there was always one egg left over. When I took the
eggs out in groups of seven, I emptied the basket.
passer-by bumped her. She dropped the basket and all
the eggs broke. The passer-by, wishing to pay for
her loss, asked, 'How many eggs were in your basket?
I don't remember exactly, the woman replied, but I do
recall that whether I divided the eggs by 2,3,4,5 or 6
there was always one egg left over. When I took the
eggs out in groups of seven, I emptied the basket.
Toffees
A boy has few toffees.he is about to eat them when
one of his friend comes and asks him to share.He divides
them equally into 2 parts without any toffee remaining.
Then one more boy comes so he divides into 3 equal parts
without any toffee remaining.Then one more boy comes so
he divides into 4 equal parts without any toffee remaining.
Then one more boy comes so he divides into 5 equal parts
without any toffee remaining.Then one more boy comes so
he divides into 6 equal parts without any toffee remaining.
Then one more boy comes so he divides into 7 equal parts
but one toffee remains.
HOW MANY TOFFEES DID THE BOY ORIGINALLY HAVE?
one of his friend comes and asks him to share.He divides
them equally into 2 parts without any toffee remaining.
Then one more boy comes so he divides into 3 equal parts
without any toffee remaining.Then one more boy comes so
he divides into 4 equal parts without any toffee remaining.
Then one more boy comes so he divides into 5 equal parts
without any toffee remaining.Then one more boy comes so
he divides into 6 equal parts without any toffee remaining.
Then one more boy comes so he divides into 7 equal parts
but one toffee remains.
HOW MANY TOFFEES DID THE BOY ORIGINALLY HAVE?
Horse puzzles
There are 25 horses. In each race only 5 horses
can participate.How many races are required to select
best 5 horses out of 25?
Box Match
The following numbers are made up of matchticks ("0" with 6 matchsticks,"1" with 3 etc...). Write a 4-digit number (without a leading 0) with the digits in the given matchstick forms, so that when this number is divided by the number of matchsticks it's formed of, the quotient is a whole number (0,1,2...) Maximise the quotient ?
Example
Example
The Peculiar Number
There is a number which is very peculiar. This
number is three times the sum of its digits. Can you
find the number?
March 5, 2008
Profit and loss problem
A man visits a gift shop and buys an article for Rs.80/-. He pays the shopkeeper a Rs.100/- note. The shopkeeper doesn't have any change. Thus he approaches his neighbouring shopkeeper and asks him for change. The neighbouring shopkeeper takes the Rs.100/- note and gives ten Rs.10/- notes to the shopkeeper. The shopkeeper then keeps eight(Rs.80/-) of the notes with him and returns the two(Rs.20/-) to the man. The man walks away with the article and Rs.20/-
After some time, the neighbouring shopkeeper finds that the Rs.100/- note is fake and asks for replacement with the shopkeeper. The shopkeeper with no other alternative gives his neighbour another 100 rupees. Now, what is the loss suffered by the shopkeeper?
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