No one wants to have it, but if one got it, he does not want to lose it. What is It?

Can you count the number of matches in the picture below ?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

Can you solve the maths in the below-given picture equation?