So how many possible combinations of "how many" and "how big" are there, that equal 1 square meter?
Like, we know 2 of the combinations that equate to 1 square meter, 4 - .5x.5 squares is one combination that fits. Another combination that fits is 16 - .25x.25.
So how many different combinations are there that will fit into a 1 square meter square?
Reality works differently, there are limits and bounds, unlike in your abstract mathematical example. You are talking about Zeno's paradox, and the answer is that in reality space is not infinitely divisible.