1. What is a number? [4]
In your own words! Keep in mind that everything from positive integers to things like quaternions and infinite cardinals are often taken to be numbers.
2. How high above river level is the top of the Bata Library flagpole? [6]
Give a complete description of the method you employed. You may use a cord or rope, as well as a stick or pole, of known length, provided these are small enough to be carried by one person. You may also work together with your classmates -- as long as you give them due credit! -- and use a calculator or computer to crunch numbers, but you may not just look up the answer or ask it of someone, or use any other tools besides writing implements and paper. Please observe all applicable laws and regulations in the course of your work...