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How?
Yes, if you push the circles down a bit, it forms a 7 by 7 matrix. But if pushing the circles into a square matrix is not allowed: how?
Edit: I get it now. It is about (efficient) packing not about counting. I also get the 4th panel now...
Yeah it can fit almost 7 in a line in the last panel so theese definitely aren't the same squares(or circles)