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

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Can you find a rabbit in the given picture?

What is the fastest way to double your money?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

What you cannot hold but it is yours?

Why are televisions attracted to people?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145