What building has the most stories?
What country can make you shiver?
I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?
There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units. Can you calculate the dimensions of this box with the given data?
Who has married many women but was never married?
I don't get anymore wetter, no matter how much rain falls on me.
What is black when you buy it, red when you use it, and gray when you throw it away?
I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?
A father's child, a mother's child, yet no one's son. Who am I?
If 1+9+8=1, what is 2+8+9?
The more of this there is, the less you see. What is it?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
