What is the average temperature (in degrees Celsius) of a city over a week if the recorded temperatures are: 18Β°C, 22Β°C, 20Β°C, 21Β°C, 19Β°C, 23Β°C, and 17Β°C?
+
What is the limit of (x^2 - 1)/(x - 1) as x approaches 1?
+
Math question: What is the result of dividing 2/5 by 3/4?