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Aptitude Questions : Time Work Interview Problem

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Two passenger trains are traveling in opposite direction. The distance between them is 110 Kms. One of them starts at 4 AM and the other starts at 5 AM on a velocity of 20 and 25 KMPH respectively.

What is the time when they both will meet?

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Aptitude Questions : Measure Water Supply Brain Teaser

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You had an infinite supply of water and a 5 ml and 3 ml gallons.

How would you measure exactly 4 ml in least number of steps ?

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Aptitude Questions : Game Of Dice Brain Teaser

Difficulty Popularity

A unique solo game of dice is being played. Two dices are thrown in each turn and the scores are taken by multiplying the numbers obtained.

Now talking about a particular game, here are the facts:
1) The score for the second roll is five more than the score for the first roll.
2) The score for the third roll is six less than the score for the second roll.
3) The score for the fourth roll is eleven more than the score for the third roll.
4) The score for the fifth roll is eight less than the score for the fourth roll.

Reading the above facts, can you tell the score for each of the five throws?

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Aptitude Questions : Lateral Thinking Problem

Difficulty Popularity

Suppose there is a Christmas tree and four angels are sitting on it amidst the other ornaments. Two of them have black halos and two of them have white halos. No body among them can see above their head. Angel A is sitting on the top branch and can see angels B and C sitting below him. B can see C who is sitting in a branch lower than his. Angel D is at the base of the tree and can't be seen due to the branches in between. Also, he can't see anybody as well.

If they are asked to guess the color of their own halo (they dont know that), who do you think will be able to deduce and speak up first with a right answer?

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Aptitude Questions : Interview Balls Puzzle

Difficulty Popularity

In a closed jar, there are three strawberry candies, two mango candies and five pineapple candies. You can't see inside the jar. Now, how many toffees you must take out from the jar to make sure that you have one of each flavor?

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Aptitude Questions : Hard Logic Puzzle

Difficulty Popularity

A great meeting is held by a great logician where all the other logicians are called upon. The master logician takes them in a room and makes them sit in circle. A hat is placed on each of their heads. Now all of them can see the color of hats others are wearing but can’t see his own. They are told that there different colors of hats.

The master logician explains that a bell will be rung at regular intervals and the moment when a logician knows the color of his hat, he will leave on the next bell. If anyone leaves at the wrong bell, he will be disqualified and sent home.

All of them are assured of one thing that the puzzle will not be impossible for anyone of them. How will they manage the situation?

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Aptitude Questions : Famous Lion Tamer Interesting Puzzle

Difficulty Popularity

You are trapped with a lion in a cage with 1 unit as its radius. Both you and the lion can run effortlessly at the speed of one unit.

1) The lion is quite hungry and all he wants is to catch you and eat you up. Will he be able to do that?
2) If yes, how long do you have till he does that?

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Aptitude Questions : Maths Magic Riddle

Difficulty Popularity

I can prove why 1 = 2

Step1. Lets say y = x
Step2. Multiply through by x xy = x2
Step3. Subtract y2 from each side xy - y2 = x2 - y2
Step4. Factor each side y(x-y) = (x+y)(x-y)
Step5. Divide both sides by (x-y) y = x+y
Step6. Divide both sides by y y/y = x/y + y/y
Step7. And so... 1 = x/y + 1
Step8. Since x=y, x/y = 1 1 = 1 + 1
Step9. And so... 1 = 2

How is this possible ?

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Aptitude Questions : Famous Water Jug Problem

Difficulty Popularity

You live in Dubai and had an infinite supply of oil and a 5 liters and 3 liters jar,
how would you measure exactly 4 liters (of-course in minimum numbers of step) ?

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Aptitude Questions : Induction Brain Teasers

Difficulty Popularity

Three college toppers are summoned by the inspecting faculty. To identify the best from them, the faculty takes them into a room and places one hat on each of their heads. Now all of them can see the hats on other’s heads but can’t see his own. There are two colored hats – green and red.

Now the faculty announces that he had made sure that the competition is extremely fair to all three of them. He also gives them a hint that at least one of them is wearing a red hat. Now the first one who is able to deduce his own hat color will be awarded the most intelligent student of all award. After a few minutes, one of them raises his hand and is able to deduce the color correctly.

How?

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Aptitude Questions : Impossible Brain Teaser

Difficulty Popularity

In a recreational activity, you are given four different jars of 2 liters, 4 liters, 6 liters and 8 liters respectively with an unlimited water supply. Then you are asked to measure exactly 5 liters of water using them.

How will you do it?

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