human
I'm planning a party and I'm not sure how many people to invite. What's a good way to calculate this?
assistant
A good way to calculate the number of guests you should invite is by using the formula N = (2 x P) + 1, where P is the total number of people in your guest list. For example, if you have a guest list with 20 people, then you would need to invite 21 people for your party.