My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?
I cannot talk, but I always reply when spoken to. What am I?
I have branches, but no fruit, trunk or leaves. What am I?
Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?
What is both possible and impossible at the same time?
You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?
Who always enjoys poor health?
What has hands, but can’t clap?
Take number 1000 and then add 20 to it. Now add 1000 one more time. Now add 30. Now add 1000 one more time. Now add 40. Now add 1000 one more time. Now add 10. What is the total?
There was a strange boy who was born before his father. How can this be possible?
81 x 9 = 801. What must you do to make the this equation true?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.