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

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

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?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?