Answer: This is confusing but I do not agree that much because,
If we simply add the highest number twice from the digits 1-9, 9+9, which is 18. So 18 is the highest number which can be reached so 20 is not a possible number. However, if the problem has said that, we can obtain all the numbers from eleven to twenty by multiplying them, then I think it is possible...
According to: The Argument's Best Friend
Ethos, logos, and pathos are persuasional tools that can help writers make their argument appeal<span> to readers; this is why they're known as the argumentative </span>appeals<span>. Using a combination of appeals is recommended in each essay. Make sure to consider carefully your audience and to stress the kind(s) of appeal that will be the most effective with each audience.
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Hope this helps!!! & have a great day!!!!