Interview Puzzle
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There are twenty coins sitting on the table, ten are currently heads and tens are currently tails. You are sitting at the table with a blindfold and gloves on. You are able to feel where the coins are, but are unable to see or feel if they heads or tails. You must create two sets of coins. Each set must have the same number of heads and tails as the other group. You can only move or flip the coins, you are unable to determine their current state.
Being a PuzzleFry marshal how do you create two even groups of coins with the same number of heads and tails in each group?
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- 3 answers
- 1 votes
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You’ve got someone working for you for seven days and a gold bar to pay him. The gold bar is segmented into seven connected pieces.
You must give them a piece of gold at the end of every day.
What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?
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- 3 answers
- 1 votes
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You have two jars, 50 red marbles and 50 blue marbles. You need to place all the marbles into the jars such that when you blindly pick one marble out of one jar, you maximize the chances that it will be red. When picking, you’ll first randomly pick a jar, and then randomly pick a marble out of that jar. You can arrange the marbles however you like, but each marble must be in a jar.
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- 1 answers
- 0 votes
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You are standing before two doors. One of the path leads to gold room and the other one leads to sack room. There are two guards, one by each door. 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 gold room. What is the question?
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- 1 answers
- 0 votes
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Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?
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- 4 answers
- 1 votes
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A bunch of men are on an island, A genie comes down and gathers everyone together and places a magical hat on some people’s heads (i e , at least one person has a hat). The hat is magical: it can be seen by other people, but not by the wearer of the hat himself. To remove the hat, those (and only those who have a hat) must dunk themselves underwater at exactly midnight. If there are n people and c hats, how long does it take the men to remove the hats? The men cannot tell each other (in any way) that they have a hat.
Note: Genie does not tell how many hats she has put.
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- 1 answers
- 0 votes
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A short man takes three steps to a tall man’s two steps. They both start out on the left foot. How many steps do they have to take before they are both stepping out on the right foot together?
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- 2 answers
- 1 votes
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New Zealand to Tahiti. I was curious to look around the ship one day and in the boiler room I asked a man how old the ship was. He smiled and replied me in this way: ‘The ship is twice as old as its boiler was when the ship was as old as the boiler is now. And the combined age of the ship and the boiler is thirty years.’
Can you figure out what is the age of the ship and of the boiler?View SolutionSubmit Solution- 1,814.0K views
- 2 answers
- 0 votes
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A cement block balances evenly in the scales with three quarters of a pound and three quarters of a block. What is the weight of the whole block.
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- 1 answers
- 0 votes
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Some months back, this year, I was walking through the Central Park in New York.
I saw an intelligent looking little boy playing all by himself on the grass. I decided to talk to him and just as an excuse to start the conversation I asked him his age. A mischivious glint flickered in his eyes and he replied, ‘Two days back I was ten years old, and next year I shall be thirteen. If you know what’s today you’ll be able to figure out my birthday and that’ll give you my age.’ I looked at him bewildered. How old was the boy?View SolutionSubmit Solution- 1,813.0K views
- 1 answers
- 1 votes
