>>From Facebook.
>>I get 10 as answer.
>>Others get 14, but don't explain why.
>>Does anyone get 14?
>
>Without reading anyone else's answer, yes, I get 14. It's the number of squares of any size. However, the problem is ambiguous because the model only includes two sizes.
>
>Tamar

Yes, it's ambiguous so there are several valid answers.
Al's answer is the most unique one I've seen.