Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Why Aeroplane windows are round?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At 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." How can that be possible?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Can you find out the total number of triangles in the given figure?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Can you replace the question mark with the correct number?

I look at you, you look at me, I raise my right, you raise your left. What am I?

Which is the rope you never skip with?