Was your brother’s exam written by the professor?
Or was it generated automatically by the textbook company?
One big complaint today is that tests are generated by the textbook companies.
In the old days, the professor’s lectures prepared us for our exams.
Now, many tests are automatically generated, and not even the professors know what the test will cover.
Students could be asked about anything in the textbook.
But, if the prof wrote the exam, then he/she must not have prepared those students well.
LOL, the rumor was our accounting professor thought up the five essay questions walking up two flights of stairs to the classroom.
Adding to my post #68...
Assuming your brother is in college today, here’s another possibility: If the prof teaches at multiple colleges, he/she might have given your brother’s class an exam from another course at another college, just to avoid the extra work of creating a new exam.