After evaluating his students on the final exams. Professor Oscar reviews all 10 questions on each exam. How many questions must he review if he has 5 classes with 35 students each? Let's be accurate as possible.
For each class, he has to review the questions of 35 students, in total, he will review 10 * 35 = 350 questions. For the 5 classes, he will review a total of 350 * 5 = 1750 questions.
The answer: 1750.