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31december

Slim Lover Problem

Something to relax. A slim young man asked a girl on a date:'I say something. If it is truthful, will you give me your photo?''Yes,' replied miss.'And if it is a lie, do not give me your photograph. Would you promise that?'The girl agreed. Then the chap said such a sentence, that after a little while of thinking she realised, that if she wanted to honor her promise, she wouldn't have to give him a photo but a kiss.What would you say (if you were him) to be kissed and so on?

For Solution: Click Here

30december

Famous Ant Problem

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

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29december

Relation Problem

Two fathers and two sons went fishing. Each of them caught a fish, and none of them caught the same fish. However, they caught a total of only three fish. How is this possible?

For Solution: Click Here

28december

Who Am I Problem

Twice ten are six of us,
Six are but three of us,
Nine are but four of us;
What can we possibly be?
Would you know more of us?
Twelve are but six of us,
Five are but four, do you see?
What are we?

For Solution: Click Here

27december

6 Letter Word Problem

What six letter word in the English language contains ten other words without rearranging any of its letters?

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24december

who Am I Problem

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

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23december

Label Problem

Ganpat works for a packaging company. One day, he received four separate orders and accidentally mixed up the addresses, so he applied the address labels at random. What is the probability that exactly three packages were correctly labeled?


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22december

Digits Problem

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square


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21december

Turkey Problem

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?


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20december

Write Problem

If nine thousand, nine hundred nine rupees is written as Rs9,909,
how should twelve thousand, twelve hundred twelve rupees be written?

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17december


Plane Problem

There was an airplane crash, every single person died, but two people survived. How is this possible?

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16december


Strange Distance Problem

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

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15december


Newspaper Problem

A newspaper is supposed to have 60 pages
but pages 24 and 41 are missing.
Which other pages won't be there?


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14december


Who Am I Problem

I dig out tiny caves, and store gold and silver in them.
I also build bridges of silver and make crowns of gold.
They are the smallest you could imagine. Sooner or later
everybody needs my help, yet many people are afraid to
let me help them. - Who am I?


For Solution: Click Here

13december


Brain-bat Problem

What is represented by this BrainBat?

EEGVTABLES
EGVETABLES
GEEVTABLES
VEEGTABLES

For Solution: Click Here

10december


Toast Problem

Mother makes tasty toast in a small pan. After toasting one side of a slice, she turns it over. Each side takes 30 seconds. The pan can only hold two slices.
How can she toast both sides of three slices in 1 & 1/2 instead of 2 minutes?

For Solution: Click Here

9december

Zero Divide Zero Problem

When can the following be true?
0 / 0 = 1
Yes, read as zero divided by zero equals one!

No Tens, unit, magic.. blah blah! guess enuff hint for now

For Solution: Click Here

8december


Sheikh Inheritance Problem

An Arab sheikh tells his two sons to race their camels to a distant city to see who will inherit his fortune. The one whose camel is slower wins. After wandering aimlessly for days, the brothers ask a wise man for guidance. Upon receiving the advice, they jump on the camels and race to the city as fast as they can.
What did the wise man say to them?

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7december


Philosopher Watch Problem

One absentminded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he traveled on foot to his friend's place few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

For Solution: Click Here

6december


Sequence Problem

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

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3december

Friday Before Thursday Problem

When does Friday come before Thursday?

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2december

Light The Dark Room Problem

You are in a dark room and want to see what is inside it. With you are a match, a candle, and a kerosene lamp. Which do you light first?

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1december

Light The Cords Problem

Your job is to measure 45 minutes, if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials and so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

For Solution: Click Here

30november

Problem

Your last good ping-pong ball fell down into a narrow metal pipe imbedded in concrete one foot deep.
How can you get it out undamaged, if all the tools you have are your tennis paddle, your shoe-laces, and your plastic water bottle, which does not fit into the pipe?

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29november

Dish Full Problem

A Petri dish hosts a healthy colony of bacteria. Once a minute every bacterium divides into two. The colony was founded by a single cell at noon. At exactly 12:43 (43 minutes later) the Petri dish was half full.
At what time will the dish be full???

For Solution: Click Here

26november

Escape from Killing Problem

A man aproaches you in a dark alley. He says, 'If you tell a lie, I will kill you with a knife. If you tell the truth, I will kill you with a gun.'
What do you say to stay alive?

For Solution: Click Here

24november

Length Of Pole Problem

There is a pole in a lake. One half of the pole is in the ground, another one third is covered by water and eight feet is out of the water. What is the total length of the pole in feet?

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23november

Dollar Problem

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

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22november

Brick Problem

How many bricks does it take to complete a building that is 20 feet wide, 35 feet deep, and 14 feet tall made of brick?

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19november

Problem

A lily pad doubles in size every day. If on the 60th day the pond is exactly filled with the lily pad, on what day is the pond exactly half covered?

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Top 10 Riddles

Top 10 Riddles

Riddles 1 : Alexander Puzzle
Difficulty ★★★★☆     Popularity ★★★★★


Alexander is stranded on an island covered in forest.

One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alexander survive the fire? (There are no buckets or any other means to put out the fire)

For Answers/Discussion : Click Here
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Riddles 2 : Crime puzzle
Difficulty ★☆☆☆☆     Popularity ★★★★★


There is a certain crime, that if it is attempted, is punishable, but if it is committed, is not punishable. What is the crime?

For Answers/Discussion : Click Here
==============================================

Riddles 3 : Murder Mystery Humour Riddle
Difficulty ★★☆☆☆     Popularity ★★★★★


A donkey behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

For Answers/Discussion : Click Here
==============================================

Riddles 4 : Hard Math Riddle
Difficulty ★★★★☆     Popularity ★★★★★


Take 9 from 6, 10 from 9, 50 from 40 and leave 6.

How Come ??

For Answers/Discussion : Click Here
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Riddles 5 : Famous Riddle
Difficulty ★★☆☆☆     Popularity ★★★★★


On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kitten, cats, sacks, wives. How many were going to St. Ives?

For Answers/Discussion : Click Here
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Riddles 6 : World Most Famous Riddle
Difficulty ★★★☆☆     Popularity ★★★★★


What came first, the chicken or the egg?

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Riddles 7 : November Riddle
Difficulty ★★★☆☆     Popularity ★★★★★


A man is sitting in a pub feeling rather poor. He sees the man next to him pull a wad of £50 notes out of his wallet.
He turns to the rich man and says to him,
'I have an amazing talent; I know almost every song that has ever existed.'
The rich man laughs.
The poor man says, 'I am willing to bet you all the money you have in your wallet that I can sing a genuine song with a lady's name of your choice in it.'
The rich man laughs again and says, 'OK, how about my daughter's name, Joanna Armstrong-Miller?'
The rich man goes home poor. The poor man goes home rich.

What song did he sing?

For Answers/Discussion : Click Here
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Riddles 8 : UPSC Interview Question
Difficulty ★★☆☆☆     Popularity ★★★★★


Bay of Bengal is in which state?

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Riddles 9 : A Riddle
Difficulty ★☆☆☆☆     Popularity ★★★★☆


A bus driver was heading down a street in Delhi. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

For Answers/Discussion : Click Here
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Riddles 10 : Statement Riddle
Difficulty ★★★☆☆     Popularity ★★★★☆


'Ferari driver' easily beats the 'force indain driver' in a two care race.How did Indian newspapers truthfully report so to look as 'force indain drive' had outdone the 'ferari driver'
Think ??


For Answers/Discussion : Click Here
==============================================


Last Updated:2011-11-19

18november

Problem

1. What does:
TIM JOB
represent?


2. What does:
MO_ _
represent?


For Solution: Click Here

17november

Next Child Name Problem

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

For Solution: Click Here

16november

Egg Problem

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

For Solution: Click Here

15november

Rectify Equation Problem

Rectify the following equality 101 - 102 = 1 by moving just one digit.

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12november

Divide Problem

An old lady left $33,333 to be divided equally among two fathers and two sons and each was to receive $11,111.
How was this possible?

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11november

Room Problem

What kind of room has no windows or doors?

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10november

Will Problem

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.
How much did the widow receive?

For Solution: Click Here

9november

Word Problem

Rearrange the letters in "new door" to make one word.

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8november

Who Am I Problem

I have keys that open no locks,
I have space, but there is no room,
You can enter, but you can't go in.
What am I?

For Solution: Click Here

5november

Strange Problem

If you say my name, I'll no longer exist. What am I?

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4november

Seating Problem

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

For Solution: Click Here

3november

Sentence Problem

Make a sentence consisting of three words that have the whole alphabet.

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2november

Strange Sum Problem

When can you add two to eleven and get one?

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1november

Candy Problem

The word CANDY can be spelled using just 2 letters.
Can you figure out how?

For Solution: Click Here

20october

Ball Problem

A billiard ball is struck without side so that it strikes all four cushions and returns to its starting position. In what direction is it struck, and how far does it travel

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19october

Sum Problem

If EELS + MARK + BEST + WARY = EASY
What does HELP + BARK + WARD + LEAD equal?

For Solution: Click Here

18october

Sequence Problem

Here's another one of my favorites. Look at this sequence of letters and then tell us what the last letter should be.
O T T F F S S ?

For Solution: Click Here

13october

Problem

What belongs to you but others use it more than you do?


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12october

Chimney Problem

What can go up a chimney down, but cant go down a chimney up?

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11october

Age Problem

It walks on 4 when its young, walks on 2 when its older, and walks on 3 when its very old?

For Solution: Click Here

8october2010

Sum Problem

If EELS + MARK + BEST + WARY = EASY
What does HELP + BARK + WARD + LEAD equal?

For Solution: Click Here

7october2010

Truth-Lie Problem

Four children had a race. At the end of the race
four statements were made:

Robert: I didn't come in first or last
David: I didn't come in last
Melissa: I was first
Bailey: I was last
You know that one, and only one, of the children
didn't tell the truth. Who won the race?

For Solution: Click Here

6october2010


Costume Problem

There were three women in all swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

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5october2010

Anagram Problem

Which Day of the week has anagram ??

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4october2010


Elevator Problem

A woman lives in a skyscraper thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why ?

For Solution: Click Here

1october2010


Number Problem

A teacher thinks of two consecutive numbers between 1 and 10. The first student knows one number and the second student knows the second number. The following exchange takes place:
First: I do not know your number.
Second: Neither do I know your number.
First: Now I know.
What are the 4 solutions of this easy number puzzle?

For Solution: Click Here

30september2010

Ant Problem

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

For Solution: Click Here

29september2010


Egg Problem

how can you tell a raw egg from a hard-boiled egg ?

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28september2010


Monkey Truth Problem

There are people and strange monkeys on this island, and you can not tell who is who (Edit: untill you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

For Solution: Click Here

27september2010


Pool Problem

A swimming pool has four faucets. The first can fill the entire pool with water in two days, the second in three days, the third in four days, and the last one can fill the pool in 6 hours.
How long will it take to fill the pool using all 4 faucets together?

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24september2010


Problem

Lavesh was piloting a plane behind a car but was never able to overtake it. Why?

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23september2010


Magnet Problem

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

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22september2010


Birthday Problem

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

For Solution: Click Here

21september2010


Mathematical Symbol Problem

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

For Solution: Click Here

20september2010


Mathematical Symbol Problem

Using four sevens (7) and a one (1) create the number 100. Except the five numerals you can use the usual mathematical operations (+, -, x, :), root and brackets ()

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19september2010


Mathematical Trick Teaser Problem

Rectify the following equality 101 - 102 = 1 by moving just one digit.

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18september2010

Mathematical Roundoff Problem
Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

For Solution: Click Here

17september2010


Mathematical Number Problem

What 5-digit number has the following property? If we put numeral 1 in front of the number, we get a number three times smaller, than if we put the numeral 1 behind this number.

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16september2010

Time By cents Problem

man gave one son 10 cents and another son was given 15 cents. What time is it?

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15september2010

Mathematical Problem

What is the four digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?


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14september2010

Cross the river Athlete-Coach puzzle

There are three Athletes (Lavesh, Tarun and Harish) and their individual Coaches (Meher, Meenaxi and priyanka) standing on the shore.
No Coach trusts their Athlete to be near any other Coach unless they are also with them.
There is a boat that can hold a maximum of two persons.
How can the six people get across the river?

For Solution: Click Here

13september2010

Triplets Puzzle
Three Brothers are identical triplets. The oldest by minutes is Lavesh, and Lavesh always tells anyone the truth. The next oldest is Tarun, and Tarun always will tell anyone a lie. Harish is the youngest of the three. He sometimes lies and sometimes tells the truth.

Ganpat, an old friend of the family's, came over one day and as usual he didn't know who was who, so he asked each of them one question.

Ganpat asked the brother that was sitting on the left, "Which brother is in the middle of you three?" and the answer he received was, "Oh, that's Lavesh."
Ganpat then asked the brother in the middle, "What is your name?" The response given was, "I'm Harish."
Ganpat turned to the brother on the right, then asked, "Who is that in the middle?" The brother then replied, "He is Tarun."
This confused Ganpat he had asked the same question three times and received three different answers.
Who was who?


For Solution: Click Here

12september2010

Mathematical Fraction Problem

Can you arrange 9 numerals - 1, 2, 3, 4, 5, 6, 7, 8 and 9 - (using each numeral just once) above and below a division line, to create a fraction equaling to 1/3 (one third)

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11september2010

Mathematical Symbol Problem

What mathematical symbol can be placed between 5 and 9, to get a number greater than 5 and smaller than 9?

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10september2010


Burn The Strings (Difficulty Level : Medium)

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.
How do you measure 45 minutes?

For Solution: Click Here

9september2010


Gallon-2 (Difficulty Level : Medium)

You are mixing cement and the recipe calls for five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four gallon bucket and a seven gallon bucket and nether has graduation marks. Find a method to measure five gallons.

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8september2010

The Islanders (Difficulty Level : Medium)

There are two beautiful yet remote islands in the south pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands, and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same Island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?

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7september2010


Fill the gallon (Difficulty Level : Medium)

You have a three gallon and a five gallon measuring device. You wish to measure out four gallons.

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6september2010

Old Classical :The missing dollar (Difficulty Level : Medium)

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognizes the three as friends and asks the waiter to return $5 to the men.
The waiter is not only poor at mathematics
but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.
Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14.....where has the other $1 gone from the original $15?

For Solution: Click Here

5september2010


Boxes with the wrong labels (Difficulty Level : Easy)

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.
How can you label the boxes correctly?

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4september2010

The Living Door (Difficulty Level : Medium)
You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth ,the other always lies and you don't know which is which.
What is the question you ask?

For Solution: Click Here

3september2010



There is something about Mary (Difficulty Level : Easy)

Mary's mum has four children.
The first child is called April.
The second May.
The third June.
What is the name of the fourth child?

For Solution: Click Here

2september2010

Old-Classical Frog-Well (Difficulty Level : Easy)

A frog is at the bottom of a 30 meter well. Each day he summons enough energy for one 3 meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?


For Solution:
Click Here

1september2010

Where is Father Solution ?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

For Solution: Click Here

Mind Games - Checkers

Play Mario Online

Sudoku Web



Top 20 Popular Puzzles

Top 20 Popular Puzzles
Popular Puzzles 11 : Weighing Balance Puzzle
Difficulty ★★★★☆     Popularity ★★★★☆


You can place weights on both side of weighing balance and you need to measure all weights between 1 and 1000. For example if you have weights 1 and 3,now you can measure 1,3 and 4 like earlier case, and also you can measure 2,by placing 3 on one side and 1 on the side which contain the substance to be weighed. So question again is how many minimum weights and of what denominations you need to measure all weights from 1kg to 1000kg.

For Answers/Discussion : Click Here
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Popular Puzzles 12 : Trick Question
Difficulty ★★★☆☆     Popularity ★★★★☆


Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

For Answers/Discussion : Click Here
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Popular Puzzles 13 : Puzzle Boat
Difficulty ★★★★☆     Popularity ★★★★☆


At the local model boat club, four friends were talking about their boats.

There were a total of eight boats, two in each colour, red, green, blue and yellow. Each friend owned two boats. No friend had two boats of the same colour.

Alan didn't have a yellow boat. Brian didn't have a red boat, but did have a green one. One of the friends had a yellow boat and a blue boat and another friend had a green boat and a blue boat. Charles had a yellow boat. Darren had a blue boat, but didn't have a green one.

Can you work out which friend had which coloured boats?

For Answers/Discussion : Click Here
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Popular Puzzles 14 : Building Puzzle
Difficulty ★★★★☆     Popularity ★★★★☆


A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

For Answers/Discussion : Click Here
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Popular Puzzles 15 : Find next number in series
Difficulty ★★☆☆☆     Popularity ★★★☆☆


What are the next two numbers in this sequence?

7, 14, 17, 21, 27, 28, 35, 37, ?, ?

For Answers/Discussion : Click Here
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Popular Puzzles 16 : Aeroplane Hardest Quiz
Difficulty ★★★★★     Popularity ★★★☆☆


The puzzle question is : On Bagshot Island, there is an airport. The airport is the homebase of an unlimited number of identical airplanes. Each airplane has a fuel capacity to allow it to fly exactly 1/2 way around the world, along a great circle. The planes have the ability to refuel in flight without loss of speed or spillage of fuel. Though the fuel is unlimited, the island is the only source of fuel.
What is the fewest number of aircraft necessary to get one plane all the way around the world assuming that all of the aircraft must return safely to the airport? How did you get to your answer?
Notes:
(a) Each airplane must depart and return to the same airport, and that is the only airport they can land and refuel on ground.
(b) Each airplane must have enough fuel to return to airport.
(c) The time and fuel consumption of refueling can be ignored. (so we can also assume that one airplane can refuel more than one airplanes in air at the same time.)
(d) The amount of fuel airplanes carrying can be zero as long as the other airplane is refueling these airplanes. What is the fewest number of airplanes and number of tanks of fuel needed to accomplish this work? (we only need airplane to go around the world)

For Answers/Discussion : Click Here
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Popular Puzzles 17 : Sound Series Pattern
Difficulty ★★☆☆☆     Popularity ★★★☆☆


Can you figure out the logic I used to decide the order of the following words: gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

For Answers/Discussion : Click Here
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Popular Puzzles 18 : Missing Number in this Sequence
Difficulty ★★☆☆☆     Popularity ★★★☆☆


Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

For Answers/Discussion : Click Here
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Popular Puzzles 19 : Simple Simple Google Interview Puzzle
Difficulty ★★☆☆☆     Popularity ★★★☆☆


The puzzle is if the shopkeeper can only place the weights in one side of the common balance. For example if shopkeeper has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names the weights you will need to measure all weights from 1 to 1000. This is a fairly simple problem and very easy to prove also.  Answer for this puzzle is given below.

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Popular Puzzles 20 : Paradox Probability Puzzle
Difficulty ★★★☆☆     Popularity ★★★☆☆


This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

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Last Updated:2011-11-25