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Puzzle Archives :: Interview Puzzles

 Interview Puzzles Practice Set 3

  • Question :: 1

    2 Eggs 100 floor Puzzle

    There is a building of 100 floors If an egg drops from the Nth floor or above it will break. If it’s dropped from any floor below, it will not break. You’re given 2 eggs. Find N, while minimizing the number of drops for the worst case?


    No Best Answer on this question yet!

    Asked In : Infosys

  • Question :: 2

    Red and Blue Marbles Puzzle

    There are 2 identical empty jars alongside the jars there were 50 red & 50 blue marbles kept. You need to put all the marbles into both of the jars in such a way that when any jar is selected at random the probability of picking up a red marble is the highest.


    No Best Answer on this question yet!

    Asked In : Infosys

  • Question :: 3

    Connect 3 Houses with 3 Wells.

    Connect 3 Houses with 3 Wells without the lines intersecting?



    No Best Answer on this question yet!

    Asked In : Sapient

  • Question :: 4

    100 hat puzzle

    100 prisoners stand in line, one in front of the other. Each wears either a red hat or a blue hat. Every prisoner can see the hats of the people in front – but not their own hat, or the hats worn by anyone behind. Starting at the back of the line, a prison guard asks each prisoner the color of their hat. If they answer correctly, they will be pardoned. Before lining up, the prisoners confer on a strategy to help them.

    What should they do?


    No Best Answer on this question yet!

    Asked In : Alcatel-Lucent

  • Question :: 5

    Three cannibals and three anthropologists

    Three cannibals and three anthropologists have to cross a river.The boat they have is only big enough for two people. The cannibals will do as requested, even if they are on the other side of the river, with one exception. If at any point in time there are more cannibals on one side of the river than anthropologists, the cannibals will eat them.

    What plan can the anthropologists use for crossing the river so they don’t get eaten?

    Note: One anthropologist cannot control two cannibals on land, nor can one anthropologist on land control two cannibals on the boat if they are all on the same side of the river. This means an anthropologist will not survive being rowed across the river by a cannibal if there is one cannibal on the other side.


    No Best Answer on this question yet!

    Asked In : Wipro

  • Question :: 6

    Three Bulbs & Light Switches

    You’re in a room with three light switches, each of which controls one of three light bulbs in the next room. You need to determine which switch controls which bulb. All lights are off to begin, and you can’t see into one room from the other. You can inspect the other room only once. How can you find out which switches are connected to which bulbs?


    No Best Answer on this question yet!

    Asked In : Wipro

  • Question :: 7

    There are three boxes, one contains only apples, one contains only oranges, and one contains both apples and oranges. The boxes have been incorrectly labeled such that no label identifies the actual contents of its box. Opening just one box, and without looking in the box, you take out one piece of fruit. By looking at the fruit, how can you immediately label all of the boxes correctly?


    No Best Answer on this question yet!

    Asked In : Wipro

  • Question :: 8

    You have a 100 coins laying flat on a table, each with a  head side and a tail side. 10 of them are heads up, 90 are tails up. You can't feel, see or in any other way find out which side is up. Split the coins into two piles such that there are the same number of heads in each pile.


    No Best Answer on this question yet!

    Asked In : Wipro Alcatel-Lucent

  • Question :: 9

    There are two people, they were born on the same second, same time, same day, same week, same month, same year and from the same mother. But they are not twins. How is that possible?


    No Best Answer on this question yet!

    Not Yet Asked in Any of the Companies

  • Question :: 10

    There are 10 stacks of 10 coins each. Each coin weights 10 gms. However, one stack of coins is defective and each coin in that stack weights only 9 gms. What is the minimum number of weights you need to take to find which stack is defective? How?



    No Best Answer on this question yet!

    Asked In : Tech Mahindra

Puzzle test enable the companies to check the Logical skills of a candidate. Check out these Puzzle topics with answers for the interview! You can choose a topic and speak up your mind through a Gmail type editor.