• Views : 80k+
  • Sol Viewed : 20k+

Mind Teasers : Extraordinary Question

Difficulty Popularity

Something Extraordinary happened on May 6Th 1978 at 12:34am what was that?

Discussion
Suggestions
  • Views : 90k+
  • Sol Viewed : 30k+

Mind Teasers : Popular Interview Problem

Difficulty Popularity

I have two rectangular bars.

They have property such that when you light the fire from one end , it will take exactly 60 seconds to get completely burn.
However they do not burn at consistent speed (i.e it might be possible that 40 percent burn in 55 seconds and next 60 percent can burn in 10 seconds).

Problem is : How do you measure 45 seconds ?

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

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?

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

Mind Teasers : Floating Fish MatchStick Riddle

Difficulty Popularity

As shown in the image below, group of fishes are swimming from left to right. By moving just three matchsticks, can you make fishes from right to left?

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

Mind Teasers : Three Magic Numbers Puzzle

Difficulty Popularity

Find three magic number such that ?

* Product of three numbers is prime.
* 2nd number - 1st number = 3rd number - 2nd number

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

Mind Teasers : Find Out Who Survives Riddle

Difficulty Popularity

100 people are standing in a circle. The person standing at number 1 is having a sword. He kills the person next to him with the sword and then gives the sword to the third person. This process is carried out till there is just one person left.

Can you find out who survives?

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

Mind Teasers : Hardest Chess Problem

Difficulty Popularity

This is a classic chess puzzle and considered to be one of the hardest puzzles in history.
As shown in the picture below, White army is arranged in a classic chess board. You need to add black army i.e
1 king
1 queen
2 rooks
2 bishops
2 knights
8 pawns
in such a way that not a single piece of either color is under attack.

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

Mind Teasers : Statement Puzzle

Difficulty Popularity

Christanio Ronaldo is a strange liar.

He lies on six days of the week, but on the seventh day he always tells the truth.

He made the following statements on three successive days:

Day 1: 'I lie on Monday and Tuesday.'
Day 2: 'Today, it's Thursday, Saturday, or Sunday.'
Day 3: 'I lie on Wednesday and Friday.'

On which day does Christanio Ronaldo tell the truth?

By Admin
  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Save Death Penalty Brain Teaser

Difficulty Popularity

A man committed a felony. As per the rules of the empire, the king decided to sentence him to death. However, he gave the man a choice; a choice to decide which way he wanted to die.

The man was quite smart and he said something, which saved him from his death. What do you think he must have said?

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

Mind Teasers : Multiple Answers Problem

Difficulty Popularity

Can you solve the equation in the image below(at-least three different ways) by playing numbers 1 through 9 in the boxes so that all three equation are correct ?

  • Views : 40k+
  • Sol Viewed : 10k+

Mind Teasers : Very Hard Math Question

Difficulty Popularity

There stand nine temples in a row in a holy place. All the nine temples have 100 steps climb. A fellow devotee comes to visit the temples. He drops a Re. 1 coin while climbing each of the 100 steps up. Then he offers half of the money he has in his pocket to the god. After that, he again drops Re. 1 coin while climbing down each of the 100 steps of the temple.

If he repeats the same process at each temple, he is left with no money after climbing down the ninth temple. Can you find out the total money he had with him initially?

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