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Puzzles

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17 Horses Puzzle

By |October 9th, 2012|

A man wants to divide his 17 horses among his three sons. According to his will the oldest man should get half of the horses,the middle son should get one third of the horses and the youngest son should get one ninth of the horses.
When there father dies they were not able to divide the horses as the result was coming in fractions. As the sons were fighting on how to divide the horses a traveling mathematician came and heard their problem. He proposed a solution with which all the sons got their share in the property without harming any animal.
What was the advice given and how the group of houses were divided?

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12 Ball Puzzle

By |October 9th, 2012|

There are 12 black balls of equal size and shape.One of them is heavier than the other 11 balls. You are given a weighing balance.Now using not more than 3 weighing you have to find out which is the defective ball in the lot.

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10 jars marbles puzzle

By |October 9th, 2012|

You are provided with 10 jars which contains marbles. One jar among the 10 contains marbles weighing 9 grams each whereas a regular marbles weighs 10 grams. You are provided with a weighing machine and you can just make a single weighing on the machine.There are infinite number of marbles in each jar. How will you decide which is the jar containing 9 grams marbles in just single weighing?

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Bee Puzzle

By |October 9th, 2012|

This is one of the most commonly asked interview puzzle just to confuse the candidates.

Two trains enters a tunnel 200 km long traveling at 100 km/h from opposite ends.As soon as they enter the tunnel a fast flying bee with a speed of 1000 km/h starts from end of the tunnel and heads towards the other.As soon as the bee reached the other train it turns around and goes back to the first train and again turns around after reaching the first train. The two trains collide and the bee survived the collision. How much distance does the bee travels?

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50 Red and 50 Green Balls Puzzle

By |October 9th, 2012|

You are given two jars. You have 50 Red Balls and 50 Green Balls. You have to place all the balls in the jars such that when a random ball is picked from any random jar the chances of picking the Red ball is maximum. What will be the value of probability for the same.

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Door Puzzle

By |October 9th, 2012|

Well this is one of the most common puzzle asked in Interviews.

You are given a choice of three doors by an Angel. You can choose only one of the doors among the three. Out of these three doors two contains goat and one has a jackpot.

After you choose one of the doors she reveals one of the other two doors behind which there is a goat. Angel givesĀ  you an opportunity to change the door or you can stick with your chosen door.

You don’t know behind which door we have the goat.Should you switch or it doesn’t matter?

[…]

Two Cubes Puzzle

By |October 9th, 2012|

A person has two cubes at his home. Everyday he arranges both the cubes so that the front faces shows the current day of the month. What are the numbers present on both the Cubes so that the person can do this task?

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Fruit Jars Puzzle

By |October 9th, 2012|

This is the most commonly asked interview puzzle.

You have 3 jars that are all mislabeled. One jar contains Apple, another contains Oranges and the Third Jar contains a Mixture of both Apple and Oranges.

You are allowed to pick as many fruits as you want from each jar to fix the labels on the jars. What is the minimum number of fruits that you have to pick and from which jars to correctly label them?

[…]

Pill Puzzle

By |October 9th, 2012|

A Patient has fallen ill and has been advised by doctor to take two pills daily. The two pills X and Y are indistinguishable and must be taken together.

The patient has to take two pills together otherwise the he will die. If he takes more than two pills at the same time he will die and if he takes one less pill or in different proportions he will die.

There are two bottles which contains these two pills. While taking out pills the person took one pill from Bottle X and accidentally he got two pills from Bottle Y. Now all the pills look the same.

The Pills are very costly and therefore the person does not want to waste it.How will he make sure that he eat just one pill of each type without wasting the pill?

[…]

Race Puzzle

By |October 9th, 2012|

Tom and Jerry are in a 100 meter race. When Jerry crossed the finished line tom was at 90 meters mark. Jerry asked Tom to run one more race.

In the New race Jerry would start 10 meters behind the second line. All other things are same.

Will Tom win this time? or Will Jerry win the race again? or whether it will be a tie?

[…]

Three Colour Marbles Puzzle

By |October 9th, 2012|

This Puzzle is sometimes asked in interview questions just to check how the person thinks.

You are given 1 jar which contains three different color marbles. The color of the marbles are Red,Green and Blue.

How many minimum marbles you have to pick from the jar to make sure that you get a pair of marbles of the same color.

[…]

River Crossing Puzzle

By |October 9th, 2012|

This puzzles is asked by interviewers to check the thinking of the candidates.

A man has to cross a river with a Fox, Chicken and grain. There is a boat available at the bank of the river to help him out. Since boat cannot handle much load the man can carry only one item at a time along with him.

He cannot leave fox and chicken together as Fox will eat the chicken. He cannot leave Chicken and grain together as Chicken will eat the grain.

Fox is not interested in grain so he can leave them together. How can the farmer get everything across the river.

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Daughters Age Puzzle

By |October 9th, 2012|

This Puzzle involves a bit of mathematics to figure out the correct solution.

Two Scientist met each other after twenty years.
Scientist 1: How are you?
Scientist 2: Great. I got marries and have 3 daughters now.
Scientist 1: That’s really great. How old are they?
Scientist 2: Well the product of their ages is 72 and the sum of their ages is the number written on that building.
Scientist 1: ok I go it. Wait still i am not clear.
Scientist 2: Ohh sorry the oldest one has just started to play piano.
Scientist 1: Wonderful my oldest daughter is of the same age.

How old are the daughters and how does scientist 1 find this?

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Three Friends Puzzle

By |October 9th, 2012|

This puzzles is used to test the management capability of the student by the interviewers.

Three Friends starts on a trip to the Sahara Desert. It takes 6 days to reach the destination. Each person can carry only enough food and water for 4 days. So the maximum resource which a person can carry will last for 4 days.

There is no place in between the trip where they can refill their resources.

Without risking anyone’s life they have to make as many people as possible to safely reach the destination. How many people can safely reach the destination.?

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Heaven or Hell Puzzle

By |October 9th, 2012|

You are standing before two doors.One door leads to the heaven and the other leads to Hell but you don’t know what hides behind the doors. There are two gatekeepers. You know one of them always tells the truth and the other always lies, but you don’t know who is the honest one and who is the liar.

You can only ask one question to one of them in order to find the way to heaven. What is the question?

[…]