I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

This is the oldest riddle that I have heard.

Once there was a man who was travelling with a Tiger, goat and grass.
He needs to cross a river that can carry a maximum of two i.e. Man + one of Tiger goat or grass. But the problem is "If he takes the lion with him, the goat will eat grass and if he takes grass with him, the lion will eat the goat".

How can he ensure the safe delivery of all three?

A father's child, a mother's child, yet no one's son.

Who am I?

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

Find out which of the given views in the picture is accurately the top view of the given pyramid.

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?