A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Can you find the six hidden animals in the picture below?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

What does it mean?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

How do you go from 98 to 720 using just one letter?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.