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

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

I am the fastest animal but cannot climb the tree. What am I?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

Can you identify the famous TV character from the rebus below?

Can you solve this picture maths equation?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Solve this riddle by finding the odd one out from the rest.