I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

Can you write down eight eights so that they add up to one thousand?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

What has one letter and starts with an E?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Give it food and it will live; give it water and it will die.

What month of the year has 28 days?

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