What happened when the wheel was invented?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

If your uncle’s sister is not your aunt, what relation is she to you?

A bomb exploded in a room full of married couples and no one died. How?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

People put me on the table and cut me but do not eat me. What am I?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?