Logic riddles

Finding answers to such logic riddles is very interesting. This is a good exercise for your brain. If you have a bit of time and you do not want to watch stupid TV programs, you should occupy yourself or your children with these interesting riddles. You will be surprised how fast the time will past. Anyways, there are many awesome riddles in this collection which you will enjoy.

Logic Riddles

Logic riddles on images


Eight years ago, Bill was eight times the age of his son Bill Jr. Today, if you add their ages together, they add up to 52. How old are Bill and his son?

A frog fell into a well 12 feet deep. He could jump 3 feet, but every time he jumped 3 feet, he fell back 2 feet. How many times did he have to jump to get out of the well?

A group of soldiers were standing in the blistering sun facing due west. Their sergeant shouted at them: Right turn! About turn! Left turn! In which direction are they now facing?

There was a plane crash every single person died. Who survived?

Married couples

There are two sisters: one gives birth to the other and she, in12 turn, gives birth to the first. Who are the two sisters?

Answer: Day and night.

Who makes it, has no need of it. Who buys it, has no use for it.  Who uses it can neither see nor feel it.  What is it?

A coffin.

A book slipped from a man’s hands and fell on the floor with a loud noise. 20 eyes looked at him. How many people were in the library?

11 people were in the library. We have 2 eyes each, and there was no mention about the pairs of eyes. So we have 10 people in addition to the man who dropped the book. He can’t look at himself, but he’s still in the library.

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Batsman hit six and gone retired hurt while the new batsman come to play and get runout for his wicket and the other batsman hit six and made both century and team win..

You have two small, plain, unmarked hourglasses. One measures four minutes, the other measures seven. Using only these, how can you measure a time of nine minutes?

Turn over both hourglasses simultaneously. When the four-minute hourglass finishes, immediately turn it over. When the seven-minute hourglass finishes, immediately turn it over. The second time the four-minute hourglass finishes, the seven-minute hourglass will have been running for one minute, so immediately turning it over will record the final minute. Nine minutes in total will have elapsed.

Logic Riddles For Adults

Not only children love riddles. Have a look at this selection of logic riddles for adults. This is a good brainstorming activity which will occupy your free time. You will feel excited after finding correct answers to all these riddles.

Logic riddles for adults on illustrations

A group of soldiers were standing in the blistering sun facing due west. Their sergeant shouted at them: Right turn! About turn! Left turn! In which direction are they now facing?

East. A right turn is 90 degrees, an about turn is 180 degrees, and a left turn is also 90 degrees. Therefore, the soldiers are now facing east.

How many men were born in 1996?

No men was born, only babies.

John bets Tom $100 that he can predict the score of the football game before it starts. Tom agrees, but loses the bet. Why did Tom lose the bet?

John said the score would be 0-0 and he was right. “Before” any football game starts, the score is always 0-0.

Question: A young4 woman is attending her mother’s funeral. While there, she meets a man she has never seen before and falls in love immediately. After the funeral she tries to find him but cannot. Several days later she kills her sister. Why does she kill her sister?

Answer: She killed her sister in hopes that the man would be at the funeral. Some people say this riddle is a test of a psychopath. If you answer it correctly, you could be one.

What can travel around the world while staying in a corner?

A stamp.

Mark is 6 years old. His sister Tina is half of his age. So when Mark is 100 years old, how old is Tina?

Tina will be 97 years old when Mark is 100 years old. When Tom was 6 years old, Tina was 3 years old. 94 years later, he becomes 100 years old. And 94 years later, his sister will be 97 (94 + 3) years old.

A boy and an engineer were fishing. The boy is the son of the engineer but engineer is the father of the boy. Then who is the engineer?

Engineer is the boy’s mother.

Hard Logic Riddles

Do you like to give riddles to your students? This is a good method many teachers use. The following hard logic riddles will make your students busy for a while. You can share these riddles and as to find the answers when they have free time. This is a fun activity.

Hard logic riddles on pics



You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don’t know the identity of the two.You can ask only one question to go out from there. What should you ask?

If you ask the guard who always tells the truth, he would tell you the other guard would point you to the door of death. If you ask the guard who always lies, he would tell you the opposite door of the truth-telling guard and point you to the door of death. In either case, both guards will point to the door of death so you should choose the other one.

A family consists of two mothers, two daughters, one grandmother and one granddaughter. How many people are in the family?

There are three people – a grandmother, her daughter and her granddaughter. The grandmother is a mother to her daughter and her daughter is the mother to the granddaughter.

In olden days, the student of logic was given this problem: If half of 5 were 3, what would one-third of 10 be?

It would be 4.

Short Logic Riddles

If you love riddles have a look at these superb short logic riddles. These short riddles are not so easy as they look at the first sight. You will have to activate your brain to find correct answers. You will have so much fun!

Short logic riddles on images

I’m in you,
But not in him,
I go up,
But not down,
I’m in the colosseum,
But not a tower,
I’m in a puzzle,
But not a riddle.

Show answer: The letter

It can not be seen whenever it’s there
It fills up a room, it’s much like the air.
It can not be touched, there’s nothing to hear
It is quite harmless, there’s nothing to fear.

Show answer: Darkness

Dare trespass my threshold? Don’t dream you shall flee;
The strongest, the swiftest, cannot evade me.
I’ll seize you and crush you and wrench you apart,
Though no one may gaze on my singular heart.

Show answer: Black hole

Brain Teasers Riddles For Kids

It is very important to develop logic for children. This ability will be very useful once they are adults. Share these wonderful brain teasers riddles for kids and give your assistant when needed.

Brain teasers riddles for kids on images


The red house is on the white street, and the blue house is on the red street. Where is the white house?

Washington, DC

Bobby likes Jimmy but not Joe, apples but not pears, jeeps but not vans, shinny but not hockey, tennis but not squash. Who will he like, Sara or Sally?

Sally, he likes everything with double letters.

Question: Mary gets in the shower, but surprisingly her hair is not wet when she gets out. How is this possible?

Answer: She didn’t turn the water on!

What has a head and a tail, but no body?

A coin.

In a bicycle race, the man who came two places in front of the last man finished one ahead of the man who came fifth. How many contestants were there?

There were 6 contestants. The man came in 4th place.

A mother, a father and two children need to cross a river. They find a boat nearby, but it is small and can either carry one adult or two children at any one time. Both children are good rowers, but how can the whole family reach the other side of the river?

The children both row across. One returns. An adult goes over, and the kid comes back. Both kids row across again, and one comes back. The other adult rows across and the kid comes back. Both kids row across again.

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

Push the cork into the bottle and shake the coin out!