Brain Teasers, Riddles & Mind Games

Puzzle #827

Suppose you want to cook an egg for exactly 3 minutes. You have only a 5 minute hourglass timer and a 2 minute hourglass timer. Using these 2 timers, how can you boil the egg for exactly 3 minutes?

Answer: Tip both timers over at the same time. When the 2 minute timer runs out, drop the eggs in and cook them until the 5 minute timer runs out!

Steve, St. Paul MN

Puzzle #826

What is special about the number 854917632? 

Answer: It contains the numbers one to nine, in alphabetical order.

Steve, St. Paul MN

Puzzle #99

A man and a woman are driving along a country road on a cold winter night when the car breaks down.  Before leaving to find help, the man tells the woman not to open the doors or windows and not to let anybody in.  He leaves, and she does as he says.  When he returns, she is dead and there is a stranger in the car.  What happened?

Answer: She was pregnant and gave birth in the car.  The stranger was the baby, and she died during childbirth.

Thanks to Ashley, 15  North Carolina

Puzzle #1129

Two boys and a man need to cross a river. They can only use the canoe.
It will hold only the man OR the two boys' weight.
How can they all get across safely?

Answer: The two boys go across. One of them get out. The other one goes back. He gets out and the man gets in. He goes across. Then the man gets out and the other boy gets in and goes across. Then the boy that was left gets in and now they both go across together.

This puzzle sent to us by Michelle, 13 Wisconsin.

Puzzle #901

A says to B:
We were born on the same year, month, day, and minute.
We were born in the same hospital, hospital room and we have the same 2 parents.
We are not twins and we have no brothers.
Explain this.

Answer: They have a Sister C and they are triplets!

This puzzle sent in by Lindsay R.

Puzzle #701

What food is it that you throw away the outside of,
cook the inside of, eat the outside of, and throw away the inside of?

Answer: An ear of corn.

Shannon Simmons Grenada, MS

Puzzle #602

With the numbers 123456789, make them add up to 100.
They must stay in the same order.
You can use addition, subtraction, multiplication, and division.
Remember, they have to stay in the same order !!!

Answer: 1+2+3+4+5+6+7+(8X9) = 100

Puzzle #507

A cowboy rides into town on Friday, stays three days, and leaves on Friday. How is this possible?

Answer: Friday is his horse.

This puzzle was sent to us by Bill Cutshall

Puzzle #202

What occurs once in every minute, twice in every moment, but yet never in a thousand years?

Answer: The letter M

This puzzle was sent to us by Ryan Reyna

Puzzle #1206

You are walking down a road and you encounter a fork in the road and you do not know the correct way to go. There are two men standing at the junction and both know the correct road. One man always lies, and the other man always tells the truth, but you do not know who is the liar and who is the one who tells the truth. You can only ask each man one question, but it must be the same question for both. What is the question that would allow you to get the information necessary to choose the correct path?

Answer: You ask, "Which way would your companion say is the correct path?". The liar would lie tell you that the truthful man would say to go down the wrong path. The truthful man would tell the truth and say that the liar would tell you to go down the wrong path. They both point to the wrong path, so then the alternate is the proper path.

This puzzle was sent to us by Do Truong - Thanks for sharing your favorite brain teaser.

Puzzle #1101

A gentleman leaves home, proceeds a short distance and turns left. He goes another short distance and turns left again. He goes another short distance, then goes home. As he nears home he sees two masked men. Who are the two masked men?

Answer: The gentleman is a baseball player. The baseball playing turns left to run from 1st base to 2nd base to 3rd base then on to "home" plate. He is confronted by a "masked" catcher and the "masked" umpire when going to home plate.

Puzzle #701

There is a clerk at the butcher shop, he is Five Feet ten inches, and he wears size 13 sneakers. He has a wife and 2 kids. What does he weigh?

Answer: Meat

Puzzle #702

You have 2 American coins that total 30. One of the coins is not a quarter. What are the 2 coins?

Answer: The other coin is a quarter.

Puzzle #601

What 10 letter word can be spelled using only the letters on the top row of a standard keyboard?


Puzzle #602

You have 8 marbles. Out of the 8 marbles there is one marble that weighs slightly heavier than the rest. The rest of the marbles all weigh the same. How would you find the heaviest marble when you can only weigh them two times using a liberty scale?

Answer: Step 1: Select any 6 marbles. Place 3 marbles on each side of the scale. If one side goes down, go to Step 3. If they balance go to Step 2.

Step 2: Place the two remaining marbles on the scale. The marble that goes down is the heavy marble.

Step 3: Using the 3 marbles that went down in Step 1, select any 2 marbles. Place one marble on each side. If one side goes down, that is the heavy marble. If they balance the other marble is the heavy marble.

Puzzle #603

Finish the following sequence.

O T T F F ? ? ? ? ?

Answer: Simple count from ONE to TEN. The sequence is the 1st letter of each number. One, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten.

Puzzle #604

In the basement there are 3 light switches in the off position. Each switch controls 1 of 3 light bulbs on the floor above. You may move any of the switches, but you may only go up stairs one time. How can you determine which switch controls each light?

Answer: Turn any one switch to the "on" position for 5 minutes, then turn that switch "off". Quickly turn any other switch to the "on" position and run up stairs. Feel the two lights that are "off". One of them will be "hot" because is was "on" for 5 minutes. Obviously the "hot" bulb is controlled by the first switch you turned "on". The light that is currently "on" is controlled by the switch you last turn "on". The "cold" bulb that is "off" is controlled by the only switch left. When solving problems we often need to use all our senses.