Logical Riddles
There are six eggs in a basket. Six people each take one egg. How can it be that one egg is left in the basket?
The last person took the basket with the egg still in it
A man was found murdered one Sunday. The detective interviewed the wife and staff and was given the following alibis:
The wife said she was sleeping.
The cook said he was cooking breakfast.
The gardener said he was planting seeds in the garden.
The maid said she was getting the mail.
The butler said he was polishing the silverware.
The detective immediately knew who the murderer was.
Who did it?
The maid, there's no mail on Sundays
I am in most places, I scream and flash to help people stay safe, what am I
A fire alarm
If you have three apples and you take away two, how many do you have?
You have two apples because you took away two
What has hands but can't clap
A clock
A man lives on the 10th floor of a building. Every morning, he takes the elevator to the ground floor to leave for work. When he returns, he takes the elevator to the 7th floor and walks the rest of the way up to the 10th floor. Why?
The man is short and can’t reach the 10th-floor button in the elevator
A man has nine children. Half of them are boys. How is this possible?
All of them are boys
I can be heard but never seen. I repeat what is said, but I am not alive. What am I?
A echo
I am an odd number. Take away one letter, and I become even. What number am I?
Seven (7), because when you take S, it becomes even
What has a point but isn’t sharp?
A pencil
You have two ropes. Each rope takes exactly one hour to burn, but they don’t burn at a consistent rate (e.g., half a rope may take 10 minutes, and the rest may take 50 minutes). How can you measure exactly 45 minutes?
Light one rope at both ends and the other at one end. When the first rope burns out (30 minutes), light the other end of the second rope. It will burn out in 15 minutes, giving you a total of 45 minutes.
You are in a room with two doors. One door leads to certain death, and the other leads to freedom. There are two guards: one always tells the truth, and the other always lies. You don’t know which guard is which. You can ask only one question. What do you ask to find the door to freedom?
Ask either guard, "If I were to ask the other guard which door leads to freedom, what would they say?" Then, choose the opposite door.
I have two ears, but can't be heard, what am I
Headphones
A man gave one son 10 cents and another son 15 cents. What time is it?
10:15
What has a head, a tail, but no body?
A coin
In a room, there are three switches. Each one controls one of three light bulbs in the next room. You cannot see the light bulbs from the room with the switches. How can you figure out which switch controls which light bulb if you can only enter the second room once?
Turn on the first switch and leave it on for a few minutes.
Turn off the first switch, and immediately turn on the second switch.
Enter the second room.
The light bulb that is on is controlled by the second switch.
The light bulb that is off but warm is controlled by the first switch.
The light bulb that is off and cold is controlled by the third switch.
A man goes into a store and buys a $1 item. He pays with a $5 bill. The cashier gives him $3 in change, but the man leaves and later returns the $3. The store owner is confused but accepts the $3. Why did the man do this?
The man wanted to confuse the cashier into giving him the item for free. The original purchase was valid, but when he returned the $3, the cashier thought it was part of a refund, which made the item essentially free.
The more you take, the more you leave behind. What am I?
Footsteps
A boy is 15 years old and his sister is half his age. In 10 years, how old will his sister be?
She will be 20. The sister will always be 7 years younger, so in 10 years, the boy will be 25 and the sister will be 20.
What has an eye but can’t see?
A needle
You have two ropes. Each rope takes one hour to burn, but they burn unevenly. How do you measure exactly 45 minutes using these ropes?
Same as the previous solution: Light both ends of one rope and one end of the other. When the first rope is burned out, 30 minutes will have passed. Light the other end of the second rope, and it will burn out in 15 minutes, totaling 45 minutes.
A man is stuck in a room with no windows or doors, only a puddle of water and a mirror. How does he escape?
He looks in the mirror, sees what he saw, takes the saw, cuts the mirror in half, two halves make a whole, and climbs through the hole.
I am always hungry, I must always be fed. The finger I touch, will soon turn red. What am I?
A fire
If two’s company and three’s a crowd, what are four and five?
Nine (9)
What can be lost but never touched, can be forgotten but never seen?