Question

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A fractal pattern is created in a square, beginning with 9 identical squares arranged in a plus sign pattern. At each step, every blue square that borders blue on exactly one edge is replaced with the plus sign pattern from the first step.

As this pattern continues indefinitely, what fraction of the larger square is shaded blue:
5/27, 2/9, 7/27, 8/27???

Answer 1

ever hear of google?
search for

A fractal pattern is created in a square, beginning with 9 identical squares arranged in a plus sign pattern.

and you will find answers.

Answer 2

They are all identical. There is not a larger square. They are all the same hue of blue