Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?
How many pluses should we put between the digits of 987654321 to get a total of 99, and where?
In the image given, you can find several triangles. Can you count them all?
Replace the 'X' with any mathematical symbol to make the expression equal to 111. 18 X 12 X 2 X 3 = 111
Different lights make me strange by changing me into different sizes. What am I?
Where do fish keep their money?
There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?
In the given figure, move three matchsticks so that the resulting figure contains two rectangles.
You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?
Find the smallest sentence with all the English alphabet.
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.
