Count the number of triangles in the picture below:

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

What Adam and Eve do not have but the rest of the people have?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

What Deficiency does the below rebus represent?

VIT_MIN

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

An explorer goes on an exposition in the jungle. He sets up camp in the middle of the jungle. The next morning he sees something with a head and a tail, but he is not afraid. What did he see in his bag?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111