Can you convert the number zero(0) into a positive number using just one mathematical operator ?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What is the end of everything?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

Spot the cat in the picture below

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Identify The phrase in the picture.