If eleven plus two equals one, what does nine plus five equal?

A blonde put eyeliner on her head. Why?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

In the four images below, can you find the odd one out?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

What is the next number in this matchsticks series riddle?

The dirtier I get, the whiter I look. Who am I?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”