Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

I don't get anymore wetter, no matter how much rain falls on me.

If eleven plus two equals one, what does nine plus five equal?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

What has one letter and starts with an E?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

Which point will the car reach to go out?

What is the riddle which can be asked all day with a different correct answer each time.