Mind Teasers : Easy Maths Age Puzzle

Difficulty Popularity

Adam spent 1/6 of his lifetime in adolescence. His facial hair started growing after 1/12 more of his life. He successfully married his girlfriend Diana after 1/7 more of his life. Their son was born after 5 years from then. The son lived just 1/2 of what Adam lived. Adam dies four years after his son died.

How long did Adam live ?
category : MATHS

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Mind Teasers : Hard Logic Statement Riddle

Difficulty Popularity

There are a hundred statements.
1st person says: At least one of the statements is incorrect.
2nd person says: At least two of the statements is incorrect.
3rd person says: At least three of the statements are incorrect.
4th person says: At least four of the statements are incorrect.
..
..
..
100th person says: At least a hundred of the statements are incorrect.

Now analyze all the statements and find out how many of them are incorrect and how many are true?

Mind Teasers : Solve Magic Square Riddle

Difficulty Popularity

You have to place all the digits from 1 to 9 without repeating any number in a tic tac toe board. The condition is that the numbers should add up to 15 whether you add the numbers in each row, column or diagonally.

Can you do it?
category : LOGIC

Mind Teasers : Terrorist Attack Security Puzzle

Difficulty Popularity

UNO plans a gathering.
However there is threat of terrorist attack. So security guard who is a mathematical plans somethings to secure the place.

A terrorist stands nearby the door where
1st ambassador comes , the security guard said 'twelve' and ambassador replied with 'six'.
2nd ambassador comes , the security guard said 'six' and ambassador replied with 'three'.

The terrorist thinks its enough and walks to the door.
The security person said 'eight' , terrorist replied 'four' and get immediately arrested.

why ?
category : LOGIC | TRICK

Mind Teasers : The Hundred Number Puzzle

Difficulty Popularity

We can create number 100 by using all numbers, i.e.0123456789 and mathematical operators (+/-) in many ways.
Example
98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition that the use of the number 21 is the must. Then there are only a few solutions.

One of such solution is:
98 - 7 - 6 - 5 - 4 + 3 + 21 = 100

Can you tell any other solution?
category : SERIES | MATHS

Mind Teasers : Trick Answer Riddle

Difficulty Popularity

In Era of Abraham Lincoln, there is a world famous surgeon whose more than 90% surgeries are successful and yet almost all of his patients die.

Explain ?
category : LOGIC | RIDDLE

Mind Teasers : Sunday Probability Riddle

Difficulty Popularity

Whats the probability of getting 5 Sunday(my favorite day) in a 31 day month ?

Mind Teasers : Playing Cards Logic Riddle

Difficulty Popularity

Dr. Watson has a new card puzzle for Sherlock Holmes. He picks four cards out of the pack of 52 cards and lays them face down on the table. He offers four hints to Sherlock.
1) The left card can’t be greater than the one on right.
2) The difference between the first card and third card equals to eight.
3) None of the Ace is present
4) No face card has been included i.e. no queen king and jacks.
5) The difference between the second and fourth card is 7.
Sherlock smiles and tells all the four cards to Dr. Watson.

Can you tell the four cards?
category : LOGIC

Mind Teasers : Situation Problem

Difficulty Popularity

On a windy rainy night , I was driving in my car.
When i reach the bus stand , i see three people waiting for the bus.

1. An old lady who needs an immediate medical attention
2. My Best Friend
3. Girl whom i love from childhood

My car is a two seater, so can you tell me , what i have done in this situation ?
category : LOGIC | SITUATION

Mind Teasers : Colditz Pascal Prison Escape Puzzle

Difficulty Popularity

Two world's famous prisoners 'Colditz' and 'Pascal' are locked in a cell.
They plan to escape from the cell.
They noticed there is an open window at 40 feet above the ground level.
Both of them tried very hard but are never able to reach there.

Then both of them decided to plan to escape by a tunnel and they start digging out.
After digging for just 5 days, Colditz and Pascal comes out with the much more easier plan than tunneling and they escaped.

what was the plan ?
category : LOGIC | SITUATION

Mind Teasers : Best Thinking Brain Teaser Ever

Difficulty Popularity

Three men are living in a desert namely – Alex, Brian and Chris.

Alex hates Chris and thus he decides to kill him. To succeed in his evil intentions, he poison the water supply of Chris. Since they are living in desert, he will have to drink water or he will die of thirst.

Brian is not aware of the actions of Alex and he plans to kill Chris as well. To do this, he killed the water supply of Chris.

Chris dies due to his thirst. Who killed him?

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