I'm in you, but not in him, I go up, but not down, I'm in the Colosseum, but not a tower,

I'm in a puzzle, But not a riddle. What am I?

I am a three digit number. My second digit is four times more than my third digit. My first digit is seven less than my second digit. What Am I?

A wise man once called me "the moist star", and in an infinite sea, I can be seen afar. I create motions in which you may ride on for sport, and am also used as a scientist's port. What am I?

What falls, but does not break, and what breaks but does not fall?

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

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth I am dissolved into air. What am I?

They have tongues,

But they can't talk with you

They have no legs,

But they can walk with you

What are they?

I throw away the outside and cook the inside. Then I eat the outside and throw away the inside. What did I eat?

It is weightless, but you can see it. Put it in a bucket, and it will make it lighter. What is it?

I’m tall when I’m young and I’m short when I’m old. What am I?

The maker doesn’t need it, the buyer doesn’t use it, the user uses it without knowing. What is it?

The more there is, the less you see

You answer me, although I never ask you question. What am I?

What question can you never answer “yes” to?