• Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Tough Probability Brain Teaser

Difficulty Popularity

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. They could all be green, or blue, or any combination of green and blue.
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 is the best strategy?

Discussion
Suggestions
  • Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Deductive Logic Problem

Difficulty Popularity

A professor gives a set of three questions to the most brilliant students of his university. You can see the questions in the attached image if required. To his surprise, there are different answers by all three of them. Below are the answers by them:

Student A
1. Two
2. Six
3. Two

Student B
1. Two
2. Three
3. Infinity

Student C
1. One
2. Three
3. Two

Now you have the information that each one of them has given one answer wrong, can you find out the real answers to every problem?

  • Views : 80k+
  • Sol Viewed : 20k+

Mind Teasers : Tricky Maths Riddle

Difficulty Popularity

Hockey Stick and ball cost $50. If the Stick cost $49 more than the ball.

what is the cost of each ?

  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Most Popular Monty Hall Brain Teaser

Difficulty Popularity

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.

After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter ?

  • Views : 80k+
  • Sol Viewed : 20k+

Mind Teasers : Tricky Adam Eve Puzzle

Difficulty Popularity

Stephen died of heart attack. His soul was received in heaven. He was astonished to find himself as young as he had been in his young adult age. He looked around and there were thousands of young and naked people. His eyes searched to find someone familiar and suddenly he noticed Adam and Eve.

How did Stephen recognize them?

  • Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : IAS Interview Problem

Difficulty Popularity

I need to divide numbers from 1 to 9 into two group such that sum of numbers in one group is equal to the sum of other group.
Note : 6 cannot be flipped over to make it 9.

  • Views : 50k+
  • Sol Viewed : 20k+

Mind Teasers : Hard IAS Brain Twister

Difficulty Popularity

An international IQ test is held on knockout terms in November 2013. The final contestants are from Britain and America respectively. Both of them are handed over the final test paper which they have to fill for evaluation. They have to write their names and date on the paper. When the evaluators are handed over the sheets, they find out that both the guys have same name. In no manner can they identify which sheet belongs to whom.

Can you identify the date on which the competition was held?

  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Terrorist Plane Hijack Puzzle

Difficulty Popularity

A terrorist hijacks a plane with 10 passengers and there is lots of gold in the plane.
After talking the gold , he asked the government officials for 11 parachutes.
He killed all the passenger so that no one can identify him , take one parachute and jumps off.

Was he stupid to ask for 11
parachutes if he need only one ?

By Admin
  • Views : 60k+
  • Sol Viewed : 20k+

Mind Teasers : Whats The Temperature Rebus

Difficulty Popularity

Below rebus represents the current Temperature.

0
=========
B.Sc
LLB

What is the current Temperature ?

  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : Murder Mystery Puzzle

Difficulty Popularity

One evening there was a murder in the home of married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

By Admin
  • Views : 70k+
  • Sol Viewed : 20k+

Mind Teasers : What word am I ?

Difficulty Popularity

What word am I?

Insights:

* I am a nine letter word.

* I am the exact inverse to expression 'neighborly and active'

* I contain the word 'over'.

* I begin will a vowel.

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