I live in Transylvania with a population of 7 million people and I have 7 girlfriends. 1/3 of one percent of the female population is a blood sucking vampire, meaning there are 23,100 female vampires in my country, ( the distribution is a random) what are the odds that I one of my girlfriends is a vampire? If I have 10 friends who are also each dating 7 different women, what would the odds be that one of my friends was dating a vampire? Would my odds of dating a vampire scale up and down with an increasing sample size (population and number of gfs)? What's the easiest way to describe the parameters and the formula for a solution. Thank you. Asking for a friend.

https://youtu.be/A1dY6OkPb7E