How many sides does a circle have?
Which is the correct shadow of the bird?
Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months
I came first on earth but second on the heaven. I also came twice in a week but found just once in a year. I stay away from months but you can find me in February. What am I?
The dirtier I get, the whiter I look. Who 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?
How many times can you subtract the number two from the number fifty?
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?
Before Mount Everest was discovered, what was the highest mountain in the world?
He does not have any heart but still, He manages to live. If you kill him, you will eventually die but yet you kill him. He cannot run, who is He?
What you cannot hold but it is yours?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
