What goes up but never comes down?
There are forty elephants and they have forty-fore heads. How can this be possible?
In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat. Can this even be possible?
If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten. How is this possible?
Can you solve below mathematical equation? 2^1234 - 2^1233
My sock drawer has 26 blue socks, 13 pink socks, 33 green socks, and 12 red socks, how many socks would I have to pull out in the dark to be sure I had a matching pair?
Can you spot the hidden girl in the picture below?
Nine marbles are arranged in the image below. Can you slide two marbles to form a square?
How many triangles are there in the picture below?
Which English verb becomes past tense just by rearranging the letters?
Solve the following series: AZ, GT, MN, __, YB
In the 1920s, people feared that crossword puzzles would contribute to illiteracy.
