They came out at night, without being called. They lost at day, without being stolen. Who are they?
My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?
I have a hole in my back and legs I lack. I live where I can’t breathe and I eat without teeth. What am I?
I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?
A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log. Can you calculate the weight of the entire wooden log?
I am white when I am dirty, and black when I am clean. What am I?
I have no life, but I can die. What am I?
How many letters are in the alphabet?
I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?
A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?
What does the following BrainBat signifies? ABCDEFGHIJKLMNOPQRSTUVWYZ QQQQQQQQQQQQQQQQQQQQQQQQQ.
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.