Brain Teasers
I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I?
An echo
What 7-letter word becomes longer when the third letter is removed?
Lounger
Three doctors say Bill is their brother, but Bill says he has no brothers. How is this possible?
The doctors are his sisters
Which planet rotates clockwise?
Venus
A man exits the bar, walks 10ft south, 10ft west, and 10ft north, ending at the same spot. How?
He started at the North Pole
What can fill a room but takes up no space?
Light
What word is spelled incorrectly in every dictionary?
Incorrectly
You have 3 boxes: one contains only apples, one only oranges, one both. They're all mislabeled. You take one fruit from the "mixed" labeled box—it’s an apple. Which box actually has the oranges?
The one labeled "apples"
Mathematician known for the “last theorem” proven in 1994?
Andrew Wiles
A plane crashes on the border of the US and Canada. Where do you bury survivors?
Nowhere – survivors aren’t buried
A box with no hinges, key, or lid, yet golden treasure inside is hid. What is it?
An egg
Rearrange the letters "RACEFAST" to form a word that describes someone who doesn’t win, yet always finishes.
Caster
A man looks at a painting and says, “Brothers and sisters I have none, but that man’s father is my father’s son.”
Who is the person in the painting?
His son.
What’s the only country with a flag that isn’t quadrilateral?
Nepal
You see a house with year '1933' above door, but there was never a house numbered there before. Why?
It's built in 1933 (not number)
I have cities but no houses, forests but no trees, and rivers but no water.
A map
What English word becomes shorter when you add two letters to it?
Short
A man is found dead in a locked room hanging from the ceiling. The only things in the room are a puddle of water and a rope attached to the ceiling. The floor is otherwise bare. There are no windows, and the door is locked from the inside. How did he die?
He stood on a block of ice, tied the rope, and hanged himself. The ice melted, leaving only a puddle.
What is the world’s deepest ocean trench called?
Mariana Trench
A cowboy rode into town on Friday, stayed three days, and left on Friday. How?
His horse is named Friday
Forward I am heavy, backward I am not. What am I?
Ton
A word I know—six letters it contains—remove one letter, and 12 remains. What is it?
Dozens
A rich man tells three brilliant logicians:
"I have placed a red or blue hat on each of your heads. You can see the others' hats but not your own. At least one of you is wearing a red hat. If you can deduce your own hat color, say it. No guessing."
They sit silently for a moment, then one says, "I’m wearing a red hat."
How did they know?
If none saw two red hats, no one could deduce. The fact that they all hesitated meant each saw at least one red.
The first person realized they must also be wearing red, or the others would've spoken sooner.
What element is named after a country?
Polonium (Poland)
The king murdered all consecutive numbers except one. Which number stayed?
The number zero—no predecessor