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Mind Teasers : Nice Maths Puzzle

Difficulty Popularity

Charles walks over a railway-bridge. At the moment that he is just ten meters away from the middle of the bridge, he hears a train coming from behind. At that moment, the train, which travels at a speed of 90 km/h, is exactly as far away from the bridge as the bridge measures in length. Without hesitation, Charles rushes straight towards the train to get off the bridge. In this way, he misses the train by just four meters! If Charles would, however, have rushed exactly as fast in the other direction, the train would have hit him eight meters before the end of the bridge.

What is the length of the railway-bridge?

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  • Views : 80k+
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Mind Teasers : Police Investigating Murder Riddle

Difficulty Popularity

A couple went to river rafting on a hill station. Two days after their departure, the husband returned alone. He informed the police that her wife was swept away by the waves and died.

On the next day, police arrived to his doorstep and when he opened the door, they arrested him for murdering his wife. They told him that his travel agent had called them.

He was shocked. How did the travel agent know about the murder? Can you suggest how did he know ?

Mind Teasers : Akbar Birbal Puzzle

Difficulty Popularity

Akbar summoned Birbal out of anger. He told him that he will have to face death. He asked him to make a statement and if the statement is true he will be buried alive and if the statement is false, he will be thrown at lions. After hearing Birbal’s statement, Akbar could do nothing but smile. He gave him 5 gold bars and let him go.

What did Birbal say?

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Mind Teasers : Quick Thinking Maths Problem

Difficulty Popularity

A petri dish kept in a lab has a colony of healthy bacteria. Every bacterium divides itself into two in exactly two minutes. Now the colony started with a single cell at 2 pm. If the petri dish was exactly half full of bacteria at 3 pm, when will the dish become full of bacteria?

By Admin
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Mind Teasers : The sheep and the grass logical puzzle

Difficulty Popularity

If we tie a sheep to one peg, a circled grass is been eaten by the sheep. If we tie the sheep to two pegs with a circle on its neck, then an eclipse is eaten out of the grass by the sheep. If we want an eclipse then we put two pegs then put a rope in between then and the other end of the rope is tied up on the sheep's neck.

Question: how should we tie the peg and the sheep so that a square is eaten out from the garden's grass? We only have one sheep's rope and the peg and the rings.

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

Mind Teasers : Nine Coins Picture Puzzle

Difficulty Popularity

Nine coins are arranged in a triangle as shown in the picture below. You need to slide two triangles to form a square. Can you do it?


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Mind Teasers : Cricket Teasers

Difficulty Popularity

If in a cricket one day match, there were no wide balls, no wides, no extras and no overthrows.

What is the maximum number of runs that a batsman can score in an ideal case scenario?

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Mind Teasers : Maths Cube Riddle

Difficulty Popularity

You have two cubes with plane faces. You have to mark both the cubes with numbers in a manner that all the days of a month can be portrayed using those cubes. Also, note that you have to use both the cubes for displaying any date. Suppose if you have to display the 5th day of the month, you will have to display it as 05.

Can you do it?

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

Mind Teasers : Dollar * 4 = Quarter Equation Riddle

Difficulty Popularity

A quarter is 1/4th of a dollar but Professor Mr.GPuzzles has reversed the equation as below :

DOLLAR * 4 = QUARTER

You need to replace each alphabet by a number to decipher the logic used by Professor to make above equation true.

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

Mind Teasers : Famous Priest Well Puzzle

Difficulty Popularity

An old priest fell on a bottom of the well of a church.
The well is 20 inches deep.

At day time, the old priest climbs 5-inches but when at dark he slip back 4 inches.
In how many days priest will come out of the well ?

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

Mind Teasers : Maths Logical Problem

Difficulty Popularity

The digits 0-9(0,1,2,3,4,5,6,7,8,9) can be rearranged into 3628800 distinct 10 digits numbers.

How many of these numbers are prime ?

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