John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?
What's the only room from which no one can enter or leave
You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?
81 x 9 = 801. What must you do to make the this equation true?
He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?
What can go up a chimney down, but can’t go down a chimney up?
What kind of band never plays music?
What is the end of everything?
A word I know, Six letters contain, Subtract just one, And twelve is what remains.
My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?
10+10 and 11+11 can give you the same answer. Explain how?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
