Problem P. 3928. (November 2006)
P. 3928. Sid has a very good sense of music. One day when he walked home he was surprised to experience that the change in the pitch of the sound of the horn of a passing car changed exactly by one major second (a whole tone). When he got home he could calculate the speed of the car. Did the driver keep the speed limit in towns?
Deadline expired on December 11, 2006.
143 students sent a solution. 4 points: 94 students. 3 points: 3 students. 2 points: 7 students. 1 point: 1 student. 0 point: 33 students. Unfair, not evaluated: 5 solutions.