Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

If your uncle’s sister is not your aunt, what relation is she to you?

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

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

How many triangles are there in the picture below?

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

Do You See It?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

If six children and two dogs were under an umbrella, how come none of them got wet?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?