A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

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

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

What seven-letter word has hundreds of letters in it?

In the image given, you can find several triangles. Can you count them all?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

What does a man do only once in his lifetime, but women do once a year after they are 29?