What is the question?
If a goose lays 1 egg, and the goose that hatches from that egg lays 2 eggs, and the geese that hatches from those eggs, lays 3 eggs each and the geese that hatch from those eggs each lays 4 eggs each, determine how many eggs the 13th set of geese in the series will lay.
To find the answer:
And so the goose produces 6 227 020 800 eggs! Thats quite a lot for one goose dont you think?