3 Gallon Jug And 5 Gallon Jug
You have a 3-gallon and a 5-gallon jug that you can fill from a fountain of water.
The problem is to fill one of the jugs with exactly 4 gallons of water. How do you do it?
You've got to defuse a bomb by placing exactly 4 gallons (15 L) of water on a sensor. The problem is, you only have a 5 gallon (18.9 L) jug and a 3 gallons (11 L) jug on hand! This classic riddle, made famous in Die Hard 3.
The problem is to fill one of the jugs with exactly 4 gallons of water. How do you do it?
You've got to defuse a bomb by placing exactly 4 gallons (15 L) of water on a sensor. The problem is, you only have a 5 gallon (18.9 L) jug and a 3 gallons (11 L) jug on hand! This classic riddle, made famous in Die Hard 3.
Hint:
Fill the 5-jug up completely. There will be, of course, 5 gallons in the 5-jug. You must fill all the gallons up to the top, otherwise you don't actually know how much you have.
Use the water from the 5-jug to fill up the 3-jug. You're left with 3 gallons in the 3-jug and 2 gallons in the 5-jug.
Pour out the 3-gallon jug. You're left with nothing in the 3-jug and 2 gallons in the 5-jug.
Transfer the water from the 5-jug to the three jug. You're left with 2 gallons in the 3-jug. And nothing in the 5-jug.
Fill up the 5-jug completely. You now have 2 gallons in the 3-jug and 5 in the 5-jug. This means that there is 1 gallon (3.8 L) of space left in the 3-jug.
Use the water from the 5-jug to fill up the 3-jug. Fill up the last gallon of space in the 3-jug with the water from the 5-jug. This leaves you with 3 gallons in the 3-jug, and 4 gallons in the 5-jug.
Fill the 3-jug completely with water. You now have 3 gallons (11.4 L) of water.
Transfer this water into the 5-jug. You now have nothing in the 3-jug, and 3 gallons (11.4 L) in the 5-jug.
Re-fill the 3-jug with water. You now have 3 gallons (11.4 L) in the 3-jug and 3 gallons in the 5-jug.
Fill the 5-jug with water from your 3-jug. You now have 1 gallon (3.8 L) in the 3-jug and 5 gallons (18.9 L) in the 5-jug. This is because, in the last step, you only had 2 gallons (7.6 L) of space left over, so you could only pour 2 gallons.
Pour out the 5-jug and refill it with your 1 gallon. You now have nothing in the 3-jug and 1 gallon in the 5-jug
Fill up the 3-jug. You now have 3 gallons (11.4 L) in the 3-jug and 1 in the 5-jug.
Transfer the 3 gallons (11.4 L) of water into the 5-jug to end up with 4 gallons (15.1 L). Simply pour over your three gallons into the 5-jug, which only had 1 gallon (3.8 L) in it previously. 1+3=4, and a successfully defused bomb. Did you answer this riddle correctly?
YES NO
Use the water from the 5-jug to fill up the 3-jug. You're left with 3 gallons in the 3-jug and 2 gallons in the 5-jug.
Pour out the 3-gallon jug. You're left with nothing in the 3-jug and 2 gallons in the 5-jug.
Transfer the water from the 5-jug to the three jug. You're left with 2 gallons in the 3-jug. And nothing in the 5-jug.
Fill up the 5-jug completely. You now have 2 gallons in the 3-jug and 5 in the 5-jug. This means that there is 1 gallon (3.8 L) of space left in the 3-jug.
Use the water from the 5-jug to fill up the 3-jug. Fill up the last gallon of space in the 3-jug with the water from the 5-jug. This leaves you with 3 gallons in the 3-jug, and 4 gallons in the 5-jug.
Fill the 3-jug completely with water. You now have 3 gallons (11.4 L) of water.
Transfer this water into the 5-jug. You now have nothing in the 3-jug, and 3 gallons (11.4 L) in the 5-jug.
Re-fill the 3-jug with water. You now have 3 gallons (11.4 L) in the 3-jug and 3 gallons in the 5-jug.
Fill the 5-jug with water from your 3-jug. You now have 1 gallon (3.8 L) in the 3-jug and 5 gallons (18.9 L) in the 5-jug. This is because, in the last step, you only had 2 gallons (7.6 L) of space left over, so you could only pour 2 gallons.
Pour out the 5-jug and refill it with your 1 gallon. You now have nothing in the 3-jug and 1 gallon in the 5-jug
Fill up the 3-jug. You now have 3 gallons (11.4 L) in the 3-jug and 1 in the 5-jug.
Transfer the 3 gallons (11.4 L) of water into the 5-jug to end up with 4 gallons (15.1 L). Simply pour over your three gallons into the 5-jug, which only had 1 gallon (3.8 L) in it previously. 1+3=4, and a successfully defused bomb. Did you answer this riddle correctly?
YES NO
A Prisoner Escaped From A Prison Riddle
A prisoner escaped from a prison and began to make a dash on foot. He ran for about 3 miles with intermittent stops to catch his breath until he saw a police car coming towards him. Instead of turning in the opposite direction and making a run for it, the man ran towards the police car briefly before turning and running into a nearby woods to hide. Why did the man run towards the police car?
Hint:
The man was more than halfway across a bridge when he spotted the police car, so the quickest way to leave the bridge was to run towards the police car and then turn and run into the woods to hide. Did you answer this riddle correctly?
YES NO
YES NO
A single Dad named Mark was left to raise 3 kids... Billy, Harry, & Mark.
Billy left for college in 2019.
Harry left in 2020.
Mark left in 2023.
Who left first?
Billy left for college in 2019.
Harry left in 2020.
Mark left in 2023.
Who left first?
Hint:
The mother. In order for Mark to be a single dad, the mother had to leave him and the kids first. Did you answer this riddle correctly?
YES NO
YES NO
April May June Riddle
Billy's mom had 4 children. The 1st one was April, the 2nd was May, and the 3rd was June. What was the 4th child named?
Hint:
Riddle Of The Two Barbers
A man arrives at a small town and needs to get his hair cut. He discovers there are just two barbers in the town. He visits the first one and finds that he has a clean haircut and a clean place. Then he visits the second one and finds his place is a mess and he has an awful haircut.
After a moment of consideration, he decides to have his haircut done by the second barber.
Why?
After a moment of consideration, he decides to have his haircut done by the second barber.
Why?
Hint:
Both barbers must go to the other barber to get their haircuts. Since the first barber had a clean haircut, that means the second barber gives good haircuts and the first barber doesn't. Did you answer this riddle correctly?
YES NO
YES NO
I Am Not Alive But I Grow Riddle
I'm not alive but I grow. I don't have lungs but need air. I don't have a mouth but water kills me. What am I?
Hint:
You Can Crack Me Riddle
Hint:
The Person Who Built It Sold It Riddle
The man who made it sold it. The man who bought it never used it. The man who used it never saw it. What was it?
Hint:
I Enter The Garden There Are 34 People Riddle
I enter the garden. There are 34 people in the backyard. You kill 34 people. How many people are in the garden?
Hint:
If the backyard and garden are two different locations then there would be one person left in the garden. This is because the murderous rampage took place in the backyard, not the garden. However, the riddle solver considers that the backyard and the garden is the same place then, then zero people would be left, as the killer would technically be counted amongst the 34 people. Did you answer this riddle correctly?
YES NO
YES NO
Peanut Butter And Cereal Riddle
There is a man who is a conductor on a train. He runs someone over so the conductor gets sentenced to death. He goes to an electric chair, the people that work there say, "it's your last day to live, what would you like to eat?" The man replies peanut butter and cereal, they turn on the electric chair and nothing happens. The next day he gets sent to a 10 times better electric chair there they say what would you like to eat and he says peanut butter and cereal, he eats the peanut butter and cereal, and they turn on the electric chair and nothing happens. The next day he gets sent to Alcatraz, they say what do you want to eat and he says peanut butter and cereal, they turn on the electric chair and nothing happens. The next day they send him to the best electric chair in the world they say what would you like to eat? He replies peanut butter and cereal, he eats a peanut butter and cereal, and they turn on the electric chair and nothing happens, they say why aren't you getting electrocuted? And the conductor says?
Hint:
Coronavirus Lunch Riddle
Hint:
As I Was Walking Across London Bridge Riddle
As I was walking across the London Bridge, I met a man who drew his hat and drew his cane and in this riddle, I said his name. What is it?
Hint:
The man's name is Andrew.
The part which reads "and drew his cane" or "and drew his name" says the name Andrew, but separated into two words. When said aloud, it sounds just like Andrew. Did you answer this riddle correctly?
YES NO
The part which reads "and drew his cane" or "and drew his name" says the name Andrew, but separated into two words. When said aloud, it sounds just like Andrew. Did you answer this riddle correctly?
YES NO
What 8 Letter Word Riddle
Hint:
Walks Lawns Fountains Riddle
I have legs but walk not. A strong back but work not. Two good arms but reach not. A seat but sit and tarry not.
I am?
I am?
Hint:
The correct answer is the chair. The chair has legs but it cannot walk, the chair has arms but it cannot be reached but still, they are strong. Did you answer this riddle correctly?
YES NO
YES NO
Tread On The Living Riddle
Tread on the living, they make not a mumble.
Tread on the dead, they mutter and grumble.
What are they?
Tread on the dead, they mutter and grumble.
What are they?
Hint:
Leaves. They're soft and silent when they're alive but crunchy when dead. Did you answer this riddle correctly?
YES NO
YES NO
Add Your Riddle Here
Have some tricky riddles of your own? Leave them below for our users to try and solve.