Can you convert the number zero(0) into a positive number using just one mathematical operator ?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

Can you find a five letter word that is left with only two letters if one is removed?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

How can you make number one disappear by adding something to it?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?