There is a square of a particular number which when doubled, becomes 7 more than its quarter. Can you find the number?
What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?
How many pluses should we put between the digits of 987654321 to get a total of 99, and where?
A mules travels the same distance daily. I noticed that two of his legs travels 10km and the remaining two travels 12km. Obviously two mules legs cannot be a 2km ahead of the other 2. The mules is perfectly normal. So how come this be true ?
You see a boat filled with people, yet there isn’t a single person on board. How is that possible?
If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?
What is black when you buy it, red when you use it, and gray when you throw it away?
Replace the letters of words with a number so that the below equation holds true BASE + BALL --------- GAMES ----------
Why do you find that most of the buildings are deprived of the 13th floor?
I can write cow in 13 letters. Can You?
It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
