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

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

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?

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

What demands an answer, but asks no questions

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

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

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?

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

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?