Count the squares in the matchstick puzzle below?
Can you count the number of matches in the picture below ?
why number 8549176320 is one of a kind?
What always comes into a house through the keyhole?
Take 9 from 6, 10 from 9, 50 from 40, and leave 6. How Come ??
I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?
What animal walks on four legs in the morning, two legs during the day, and three legs in the evening? Oedipus, the king of Thebes, figured out the answer to the riddle:
What is the word or phrase?
Which is faster, Heat or Cold ? Explain.
I make two people out of one. What am I?
I am white when I am dirty, and black when I am clean. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
