Funny photo of Mathematics

Funny photo of Mathematics 

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Some interesting equations of Math

Some interesting equations of Math 

Many people thought math is a hard subject and it has no beauty. In this post you will find some interesting things about Mathematics.

1 X 1 = 1

11 X 11 = 121

111 X 111 = 12321

1111 X 1111 = 1234321

11111 X 11111 = 123454321

111111 X 111111 = 12345654321

1111111 X 1111111 = 1234567654321

11111111 X 11111111 = 123456787654321

111111111 X 111111111 = 12345678987654321

1111111111 X 1111111111 = 12345678900987654321

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9 X 9 + 7 = 88

98 X 9 + 6 = 888

987 X 9 + 5 = 8888

9876 X 9 + 4 = 88888

98765 X 9 + 3 = 888888

987654 X 9 + 2 = 8888888

9876543 X 9 + 1 = 88888888

98765432 X 9 + 0 = 888888888

987654321 X 9 - 1 = 8888888888

9876543210 X 9 - 2 = 88888888888

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1 X 8 + 1 = 9

12 X 8 + 2 = 98

123 X 8 + 3 = 987

1234 X 8 + 4 = 9876

12345 X 8 + 5 = 98765

123456 X 8 + 6 = 987654

1234567 X 8 + 7 = 9876543

12345678 X 8 + 8 = 98765432

123456789 X 8 + 9 = 987654321

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1 X 9 + 2 = 11

12 X 9 + 3 = 111

123 X 9 + 4 = 1111

1234 X 9 + 5 = 11111

12345 X 9 + 6 = 111111

123456 X 9 + 7 = 1111111

1234567 X 9 + 8 = 11111111

12345678 X 9 + 9 = 111111111

123456789 X 9 + 10 = 1111111111

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Best literal thinking Puzzle

 Best literal thinking Puzzle 

1. The man in the elevator.

A man lives on the  tenth floor of a  building. Every day he takes the elevator to go down  to the ground floor to go to work or go to shopping. When he returns he takes the elevator to the seventh floor and walks up the stairs to reach his apartment on the tenth floor. He hates walking, then why does he do it?

2. The man who hanged himself.

Not far from Dhaka, there is a wooden barn. The barn is completely empty, except a dead man hanging  from middle of the  central rafter. The rope around his neck is ten feet long and his feet are three feet off the floor. The nearest wall is twenty feet away from the man. It is not possible to climb up the wall or along the  rafter. The man hanged himself. How did he do it?

3. Death in field.

A man is laying deed in a field. Next to him there is a unopened package.  There are no other creature in the field. How did he die?

4. A man rode into a town on Friday. He stayed for three nights, and left the town on Friday. How is it possible?

5. why is it better to have round manhole covers then square?

6. A man was walking downstairs in a building. He suddenly realized that his wife had just dead. How?

7. One day John celebrated his birthday and two days latter his older twin brother David celebrated his birthday. How?

8. A man is stranded in a island covered with forest. One day when wind was blowing from the west, lighting strikes at the west end of the island, and sets fire to the forest. The fire is violent and burning  everything on its path, without interventions the fire will burn the whole island, killing the man in the process. There are cliff around the island,  so he cannot jump off. How can the man survive the fire.

9. you are at an unmarked intersection. One way is city of lies and other is to city of truth.  Citizens of city of lies always lie and Citizens of the city of truth always tell the  truth.

A citizens of one of those cities ( you don’t know which) is at the intersection. What question could you ask to him to find out the way of city of truth. 

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Logic Puzzle, Riddle and Brain Teasers

Logic Puzzle, Riddle and Brain Teasers  

What Do You Light First?

If you are in a dark room with a candle, a wood stove and a gas lamp.

You only have one match, so what do you light first?

Red-eyed Monks Puzzle  

The Puzzle:

There is a monastery of silent monks with no mirrors and one important rule: no red eyes!

If a monk discovers he has red eyes he must leave that night.

All is well until a visitor says "at least one of you has red eyes!"

What happens next?

  Really Hard Algebra Puzzle

2+3=8,
3+7=27,
4+5=32,
5+8=60,
6+7=72,
7+8=??
Solve it?

Boxes with Balls Puzzle  

The Puzzle:

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its color and put it back into the box, without seeing the color of the other ball.

How many such operations are necessary to correctly label the boxes?

Three Hats Puzzle  

The Puzzle:

Three people enter a room and have a green or blue hat placed on their head. They cannot see their own hat, but can see the other hats.

The color of each hat is purely random. All hats could be green, or blue, or 1 blue and 2 green, or 2 blue and 1 green.

They need to guess their own hat color by writing it on a piece of paper, or they can write "pass".

They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.

If at least one of them guesses correctly they win $50,000 each, but if anyone guess incorrectly they all get nothing.

What strategy would give the best chance of success?

(Hint: 100% chance of success is not possible.)

Ministers and King Puzzle

A king decided to replace on of his ministers without causing too hard feelings. He summoned the minister and asked him to choose one of two folded notes. The king explained that one of the notes says "You are fired" and the other states "You stay." However, the minister found out from a trusted spy that both notes actually say "You are fired." What can the minister do to save his post?

Triplets Puzzle  

The Puzzle:

Three sisters are identical triplets. The oldest by minutes is Sarah, and Sarah always tells anyone the truth. The next oldest is Sue, and Sue always will tell anyone a lie. Sally is the youngest of the three. She sometimes lies and sometimes tells the truth.

Victor, 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.

Victor asked the sister that was sitting on the left, "Which sister is in the middle of you three?" and the answer he received was, "Oh, that's Sarah."

Victor then asked the sister in the middle, "What is your name?" The response given was, "I'm Sally."

Victor turned to the sister on the right, then asked, "Who is that in the middle?" The sister then replied, "She is Sue."

This confused Victor; he had asked the same question three times and received three different answers.

Who was who?

TWO + THREE + SEVEN = TWELVE  

The Puzzle:

TWO +  THREE      SEVEN    TWELVE

Put numbers where the letters are to make the sum become true

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Logical Puzzle and Brain Teasers

Logic Puzzle and Brain Teasers  

Deadly Choice Puzzle  

The Puzzle:

A man is caught on the King's property. He is brought before the King to be punished.

The King says, "You must give me a statement. If it is true, you will killed by lions. If it is false, you will be killed by trampling of wild buffalo."

But in the end, the King has to let the man go.

What was the man's statement?

Maths Pipe Time Brain Teaser

A large petrol tank has two inlet tubes (a large one and a small one) and one outlet tube. It takes 3 hours to fill the tank with the large inlet tube. On the other hand, it takes 6 hours to fill the tank with the small inlet tube. The outlet tube allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three tubes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

  Hospital Puzzle  

The Puzzle:

A Man carries his son into the hospital because his son has a nail in his foot. The Surgeon then walks in and says "I cannot operate on this boy as he is my son".

What is going on here?

Farmer Crosses River Puzzle  

The Puzzle:

A farmer wants to cross a river and take with him a wolf, a goat, and a cabbage. There is a boat that can fit himself plus either the wolf, the goat, or the cabbage. If the wolf and the goat are alone on one shore, the wolf will eat the goat. If the goat and the cabbage are alone on the shore, the goat will eat the cabbage.

How can the farmer bring the wolf, the goat, and the cabbage across the river?

Arithmetic Brain Teaser

This odd little problem in domestic arithmetic was sprung by the cook upon Mrs. Smith when she wanted to know what the grocer charged for such small eggs.

'I paid twelve cents for the lot,' replied Bridget, 'but I made him throw in two extra ones, because they were so little, and you see that made them cost one cent a dozen less than his first asking price!'

Tell now how many eggs she received for her twelve cents?

Heads Feet Mathematical Problem

In a stable there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable?

Girl and Boy Puzzle  

The Puzzle:

A boy and a girl are talking.

"I am a boy" - said the child with black hair.

"I am a girl" - said the child with white hair.

At least one of them lied. Who is the boy and who is the girl?

Knights and Knaves Puzzle  

The Puzzle:

There are three people (Alex, Brook and Cody), one of whom is a knight, one a knave, and one a spy.

The knight always tells the truth, the knave always lies, and the spy can either lie or tell the truth.

Alex says: "Cody is a knave."
Brook says: "Alex is a knight."
Cody says: "I am the spy."

Who is the knight, who the knave, and who the spy?

  Math Handshake Riddle

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

Missing Fish Puzzle  

The Puzzle:

Two fathers took their sons fishing.

Each man and son caught one fish, but when they returned to camp there were only 3 fish. How could this be?

(None of the fish were eaten, lost, or thrown back.)

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Logic Puzzle and Brain Teasers

Logic Puzzle and Brain Teasers 

5 Pirates Puzzle - Solution

The Puzzle:

5 pirates of different ages have a treasure of 100 gold coins.

On their ship, they decide to split the coins using this scheme:

The oldest pirate proposes how to share the coins, and ALL pirates (including the oldest) vote for or against it.

If 50% or more of the pirates vote for it, then the coins will be shared that way. Otherwise, the pirate proposing the scheme will be thrown overboard, and the process is repeated with the pirates that remain.

As pirates tend to be a bloodthirsty bunch, if a pirate would get the same number of coins if he voted for or against a proposal, he will vote against so that the pirate who proposed the plan will be thrown overboard.

Assuming that all 5 pirates are intelligent, rational, greedy, and do not wish to die, (and are rather good at math for pirates) what will happen?

A box

I have a box.

The top's area is 240 square inches, the front's area is 300 square inches and the end's area is 180 square inches.

What are the dimensions of the box?

Cute Riddle

A kind hearted person Mr. Rawat buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa.After some time he becomes a millionaire.

How come the guy become millionaire ?

Apples and Friends Puzzle  

The Puzzle:

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.

Now all your friends have one apple each, yet there is an apple remaining in the basket.

How?

Easy Logic Riddle

A friend was telling me, 'I have eight sons and each has one sister.' In total, how many children does my friend have?

Bags of Marbles Puzzle  

The Puzzle:

You have three bags, each containing two marbles. Bag A contains two white marbles, Bag B contains two black marbles, and Bag C contains one white marble and one black marble.

You pick a random bag and take out one marble.

It is a white marble.

What is the probability that the remaining marble from the same bag is also white?

How Many Apples

During a recent expedition, three intrepid adventurers were left stranded in the middle of the desert with only a crate full of apples.

During the night, Alan woke up and decided to hide his share of the apples and hid a third, then promptly fell asleep again.

Brian woke up shortly after and also decided to hide a third of the remaining apples and he also dozed back to sleep.

Finally, Charlie woke up and seeing the others were asleep, took a third of what was left.

Of course none of the adventurers knew of the other's antics, so, in the morning, they shared the remaining apples, each receiving sixteen. How many apples were in the crate originally?

Burning Island  

The Puzzle:

A man 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 man survive the fire? (There are no buckets or any other means to put out the fire).

Sherlock Holmes Mystery Puzzle

Ganpat is found dead in his office at his desk.

Sherlock Holmes was working on this case and have narrowed the suspects down to three people:
1. His Friend Mr Rakesh Gupta
2. Ganpat's wife "Bhawna"
3. His Secretary "Jason Kumar"

All three suspects visited ganpat on the day of his murder for various reason as they told to sherlock.

As we know where police failed , sherlock comes.
He was able to find a note at the corner of the wall. "7B91011" was written on it.

Sherlock waste no time in announcing the killer. Who was the killer ?

City of Lies or Truth  

The Puzzle:

You are at an unmarked intersection ... one way is the City of Lies and another way is the City of Truth.

Citizens of the City of Lies always lie.

Citizens of the City of Truth always tell the truth.

A citizen of one of those cities (you don't know which) is at the intersection. What question could you ask to them to find the way to the City of Truth?

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A Test Post

This is a Test Post.

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