A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?
James ordered a fishing rod, priced at $3.56. Unfortunately, James is an Eskimo who lives in a very remote part of Greenland and the import rules forbid any package longer than 4 feet to be imported. The fishing rod was 4 feet and 1 inch, just a little too long, so how can the fishing rod be mailed to James without breaking the rules? Ideally James would like the fishing rod to arrive in one piece!
What is at the end of a rainbow?
Solve the mathematical equation in the picture below.
Replace the question mark with the correct number in below Picture:
How can you leave a room with two legs and return with six legs?
Can you Find and name the hidden bird in the picture below ?
Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?
What has many keys but can’t open a single lock?
A father's child, a mother's child, yet no one's son.
Who am I?
What is the next number in this matchsticks series riddle?
In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.