Numerical Reasoning Tests These numerical reasoning tests contain questions that test your knowledge of Ratios, Percentage Increase/Decrease, Cost and Sales Analysis, Rates and Trends, and Currency Conversions.
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ILLINOIS LEGENDS. Cahokia Mounds  Largest Archaeological Site in North America. Preserving the remains of an ancient Native American city near Collinsville, Illinois, the Cahokia Mounds State Historic Site is across the Mississippi River from St. Louis, Missouri. Covering more than 2,000 acres, Cahokia is the most sophisticated prehistoric Native civilization north of Mexico.