title: What are the chances of getting the same GUID in 1 billion iterations?
body: <p>I am working on a project where I need to generate approximately 1 billion GUIDs.</p>
  
  <p>I know GUIDs are not guaranteed to be unique but are unique almost all of the time.</p>
  
  <p>If I generated a billion GUIDs, what is the probability that there will be a match?</p>