Question

It’s number 1 the question is what is the greatest number of rows that their rectangles could have had

Answer 1

Question writers have to find different ways of asking the same question. Here we're being asked the Greatest Common Factor of 20, 28, and 44. Let's calculate that; then we'll talk about why.

`GCF(20, 28, 44) = GCF(2 * 2 * 5, 2 * 2 * 7, 2 * 2 * 11) = 2 * 2 = 4`

Answer: 4

Because 4 is a factor of 20, 28 and 44 it makes a rectangle with each of them: 4 by 5, 4 by 7, 4 by 11. Because 4 is the greatest common factor, that's the greatest number of rows that can be a common factor, which is what the question asks.