MathDB

Lautaro, Camilo and Rafael give the same exams. Each note is a positive integer. Camilo was the first in physics. Lautaro obtained a total score of

20

, Camilo, a total of

10

and Rafael, a total of

9

. Among all the tests, there were no two scores that were repeated. Determine how many They took exams, and who was second in math.

Problem Statement