I am white when I am dirty, and black when I am clean. What am I?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Why is a river so rich ?

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 ?

Can you guess the name of the month by looking the below rebus ?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

What does below chemistry rebus means?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?