Long Riddles and Answers

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Want to dive into our long riddles to test your problem solving skills. These lengthy puzzles test your ability to piece together information and find the answer.

 

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By Albert Einstein

Riddle: There are 5 houses painted 5 different colors. In each house lives a person with a different nationality. These 5 people each drink a certain type of beverage, smoke a certain brand of cigar, and keep a certain pet. None of them have the same pet, smoke the same brand of cigar, or drink the same beverage.

The Brit lives in the red house.
The Swede keeps dogs as pets.
The Dane drinks tea.
The green house is on the left of the white house.
The green homeowner drinks coffee.
The person who smokes Pall Mall rears birds.
The owner of the yellow house smokes Dunhill.
The man living in the center house drinks milk.
The Norwegian lives in the first house.
The man who smokes Blend lives next to the one who keeps cats.
The man who keeps the horse lives next to the man who smokes Dunhill.
The owner who smokes Bluemaster drinks beer.
The German smokes prince.
The Norwegian lives next to the blue house.
The man who smokes Blend has a neighbor who drinks water.

Who owns the fish?


Answer: The German. It's easiest to solve this riddle by creating a grid organized by order of the houses, you can then fill in the house number of the Norwegian, the person who drinks milk, and the blue house:

House #12345
ColorBlue
NationalityNorwegian
DrinkMilk
Smoke
Pet

These facts can all also be determined from the clues:

Brit - Red House
Swede - Dogs
Dane - Tea
Green House - Coffee
Pall Mall - Birds
Yellow House - Dunhill
Blue-masters - Beer
German - Prince
Green House is to left of the White House
Blends is next to Cats
Horse is next to Dunhill
Blends is next to Water

With this information these facts can be determined:

  1. House 3 cannot be green because whoever lives there drinks milk and not coffee.
  2. House 4 must be green since the green house needs a white house to its right.
  3. House one cannot be red because the Brit doesn't live there.

This info leads to a single color order:

House #12345
ColorYellowBlueRedGreenWhite
NationalityNorwegianBrit
DrinkMilkCoffee
SmokeDunhill
Pet

The following information can now be determined:

  1. The horse has to be at house 2 because it is next to the Dunhills.
  2. House 1 and 3 can't have birds, dogs, or Pall Malls.
  3. House 2 is where the Dane lives because of the horse.
  4. House 5 has the beer, Blue-masters, Swede, and dogs.
House #12345
ColorYellowBlueRedGreenWhite
NationalityNorwegianDaneBritGermanSwede
DrinkTeaMilkCoffeeBeer
SmokeDunhillPrinceBlue-masters
PetHorseDogs

With this version of the table we can now find the information pertaining to solving the riddle completely:

  1. House 3 has to have the Pall Mall and birds.
  2. Since blends must be next to cats blends must be at house 2 and cats at house 1.
  3. The Norwegian has the water.
  4. The German is the only one without a pet so his a the fish!
House #12345
ColorYellowBlueRedGreenWhite
NationalityNorwegianDaneBritGermanSwede
DrinkWaterTeaMilkCoffeeBeer
SmokeDunhillBlendsPall MallPrinceBlue-masters
PetCateHorseBirdFishDogs

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Riddle: There is a prison with 100 prisoners, each in separate cells with no form of contact. There is an area in the prison with a single light bulb in it. Each day, the warden picks one of the prisoners at random, even if they have been picked before, and takes them out to the lobby. The prisoner will have the choice to flip the switch if they want. The light bulb starts off.

When a prisoner is taken into the area with the light bulb, he can also say "Every prisoner has been brought to the light bulb." If this is true all prisoners will go free. However, if a prisoner chooses to say this and it's wrong, all the prisoners will be executed. So a prisoner should only say this if he knows it is true for sure.

Before the first day of this process begins, all the prisoners are allowed to get together to discuss a strategy to eventually save themselves.

What strategy could they use to ensure they will go free?


Answer: Only allow one prisoner to turn the light bulb off and all of the others turn it on if they have never turned it on before. If they have turned it on before they do nothing. The prisoner that can turn it off then knows they have all been there and saves them all when he has turned it off 99 times.

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Riddle: A school's computer system was recently hacked and the school has narrowed the pool of possible hackers to 5 people that were in the computer lab: Tyler, Justin, Chandler, Paige, and Shelley. Each of them gave three statements, two of which are true and one false.

Tyler
1. I didn't do it!
2. I've never hacked in my life.
3. Paige did it.
Justin
1. I didn't do it!
2. The attack was done from within the network.
3. I don't like Shelley.
Chandler
1. I didn't do it!
2. I've never seen Shelley in my life.
3. Paige did it.
Paige
1. I didn't do it!
2. Shelley did it.
3. Tyler was lying when he said I did it.
Shelley
1. I didn't do it!
2. Justin did it.
3. Chandler and I used to be friends.

Who hacked the system?


Answer: Justin did it.

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Riddle: There is a small town on the East Coast that has 2 barbershops each with a single barber, and on opposite sides of town. The barbershop in the good part of town is immaculate. The floors and windows are washed and the air is fresh. The barber is very friendly, always smiling, he has shined shoes, a nice head of hair, and a clean dress shirt. The barbershop in the bad part of town is a mess. The entire barbershop is covered with a layer of dirt, and the air smells of trash. The barber always has a frown on his face. His skin is oily, his hair is ragged, and there are always stains visible on his shirt.

A man comes into town and hears of both barbershops and the man decides to go to the dirty barbershop in the bad part of town. Why does he do this?


Answer: The clean-cut barber must have his hair cut by the dirty barber and the dirty barber by the clean-cut barber. So it's obvious that the dirty barber gives a better haircut.

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Riddle: Thomas has missed an excessive number of days of school, so he must meet with Principal Davis. Mr. Davis asks him "Why on Earth have you missed so many days?"

Thomas replies "There just isn't enough time for school. I need 8 hours of sleep a day, which adds up to about 122 days a year. Weekends off is 104 days a year. Summer vacation is about 60 days. If I spend about an hour on each meal, that's 3 hours a day or 45 days a year. I need at least 2 hours of exercise and relaxation time each day to stay physically and mentally fit, adding another 30 days.

Add all of that up and you get about 361 days. That only leaves 4 days for school."

The principal knows Thomas is full of it, but can't figure out why. Where is Thomas going wrong?


Answer: There are two reasons:

First, Thomas is double counting a lot of the days. A lot of the time spent sleeping, eating, and relaxing occurs during weekends and the summer. Weekends also occur during the summer, so all of these hours are getting counted several times.

Secondly, school isn't an all day thing. So the 4 days actually represents more days of school. If school is 6 hours per day, those four days represents 16 days of school.

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