What word begins and ends with an E, but has only one letter?

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

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Can you solve this picture maths equation?

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

What has many keys but can’t open a single lock?

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

What you cannot hold but it is yours?

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?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?