Before Mount Everest was discovered, what was the highest mountain in the world?

The more of this there is, the less you see. What is it?

How many sides does a circle have?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

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

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.

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

How can you take 2 from 5 and leave 4?

How many letters are in the alphabet?