How many sides does a circle have?
I have four wings but can't fly. I express no emotions. I am found on the exact spot every time you look. I keep toiling away with a little sound. Do you know what am I?
What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?
I don't get anymore wetter, no matter how much rain falls on me.
John was piloting a plane behind a car but was never able to overtake it. Why?
What is the riddle which can be asked all day with a different correct answer each time.
During which month do people sleep the least?
How many times can you subtract the number two from the number fifty?
I’m tall when I’m young, and I’m short when I’m old. What am I?
While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side. How many houses are there between your home and your grandmother's home?
If a wheel has 54 spokes, how many spaces are there between the spokes?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.