system
A chat on subreddit /r/wallstreetbets
human
Math checks out. 
  
 &lt;= Binomial Financial Analyst  
  
 (or as someone above posted, it's literally just 1-(199/200)^16 )

gpt
Man I don't understand statistics. What's wrong with my logic here: You have a 1/200 chance of getting Apple stock every time you refer a friend. He referred 16 friends. Each time you draw, you have a 1/200 chance of winning. 16*(1/200)= 8% chance of getting Apple stock at least once.