Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

What question can you never answer yes to?

There are two beautiful yet remote islands in the South Pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?

I travel all around the world but always stay in the corner. What am I?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What can go up a chimney down, but can’t go down a chimney up?

Which flower has two lips?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?