No one wants to have it, but if one got it, he does not want to lose it. What is It?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

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 ?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

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

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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.

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?