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.

What is the Surname of Barbie Doll?

If an electric train is travelling south, then which way is the smoke going?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

John was piloting a plane behind a car but was never able to overtake it. Why?

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

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

What has to be broken before you can use it?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

If you say my name, I will no longer exist. What am I?