Buzzfeed should spend less time making animated GIFs and more time on algebra. Firstly, not everyone in the group is actively killing zombies (kids, other inside workers) so bring that slightly down to an average of 90 per group annually. Now factor in that, at least keeping up with the show, over half the group dies and becomes zombies in about a year. This brings the group’s kill rate down exponentially to 45 per month in the first year, 22.5 in the second, 11.25 in the 3rd, etc. You cannot factor in “new members” because they’re arguably coming from other groups of survivors that have either fallen or abandoned them. The number still represents survivors, regardless of when they showed up to a particular group. So with that in mind.
Survivors: 3m Year 2:
Surivors: 1.5m Year 3:
Survivors: 750,000 Year 4:
Survivors: 375,000 Year 5:
Survivors: 187, 500 However it would take 18 years for the last human to die. So that’s something to celebrate.