



 
Hi Kim, For 2 I think the answer expected is the two arrays below. The number 2 has only two factors, 1 and 2. Notice that in describing them I wrote the number of rows first followed by the number of columns. This is the convention that mathematicians use. For 4 there are 3 arrays. The prime numbers in your list, 2, 3, 5, 7 and 11 have only two arrays each but the rest have more than two arrays. I hope this helps,  


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