The first population increases 2x per generation, from 2 to 4, then 8, 16, 32, 64, 128, 256, 512, 1024. The second increases by 2.5x per generation, from 2 to 5 to 19,703 by the tenth generation. That is almost a 10-fold difference after ten generations.
Work Step by Step
This highlights the dramatic ultimate differences possible when a geometric progression occurs with even slightly different increases per generation/iteration.