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...
Reduces hazardous fuels, protecting human communities from extreme fires;
Minimizes the spread of pest insects and disease;
Removes unwanted species that threaten species native to an ecosystem;
Provides forage for game;
Improves habitat for threatened and endangered species;
Recycles nutrients back to the soil; and
Promotes the growth of trees, wildflowers, and other plants;
The argument that favors federal judges having lifetime appointments is that the judges can rule on cases without fearing retribution.