In case of a point difference between the two sensors the given grade was the best possible for the student.
The exam set didn't contain any particularly difficult problem, but it was conceived to test the students' knowledge in most of the topics covered in the course. Those who failed had essentially no knowledge of the second part of the course.
In Problem 1a) you can use, without proving it, that the Lebesgue measure of rE is |r| times the Lebesgue measure of E for any real number r. I forgot that Exercise 8.4.5 in Lindstrøm's book only deals with the case where r is positive.
In Problem 5, the calligraphic B should quite obviously be a calligraphic A. This has now be corrected in the version available online.
A student pointed out an error in the solution of Extra Exercise 18 c) in the exercise set for March 18. The error has now been corrected. If you find any other errors in the solutions of any exercise set, I encourage you to let me know either by email or in the exercise sessions on Mondays. Thank you!