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

Can you find the key in the picture below?

You need to move three matchsticks to form three squares. Can you do it?

In the four images below, can you find the odd one out?

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

How can this be possible?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

If two's company, and three's a crowd, then whats four and five ?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?