This one has been on my whiteboard for awhile and I've been meaning to publish this challenge. This weekly challenge should be a fun one! The question we are trying to answer is: In what future month/year will a new breed of rabbits to exceed the human population 2:1?
Let's set some rules for how this new breed of rabbit populates so we can try to find the day our civilization will be be under the rule of our new-found long-eared overlords.
1) We will start with 1 female and 1 male rabbit born today (0 months old)
2) Each month, each female produces a litter of 4 bunnies: 1 male and 3 females
3) A female cannot start to reproduce until she has matured to 4 months of age
4) All rabbits live only to 24 months in age. (Alive months 0-23, they cease to live at the start of the 24th month)
5) Don't forget human population grows too! Assume a 0.058% month over month human population growth!
I have provided an answer, but there may be little monthly nuances that account for slightly different answers. Sound-off on when you found out it is going to happen!
Slightly different human population for my final result, with 24 extra humans - which frankly, in this terrifying scenario, I will gladly take.
Thanks for the super fun challenge, @JoeM! I can see why you were so excited for this one :) Now, off to go pull anything that looks like a carrot out of my garden, just in case...
Cheers,
NJ
Averting my eyes from the GIF, I didn't notice the 2:1 population threshold and spent way too much time trying to find the error in my workflow. :(
Here's my solution.
Like many of the other submissions, I don't have the exact same population numbers, but I end up on the same month.
Iterative macro:
