I have 35 marks in physics and 18 marks In chemistry 11 marks in mathematics but I just 7.81% how it is possible

Question : Directions: Among 80 students, 24 passed in Chemistry, 35 passed in Physics, and 29 passed in Mathematics. 8 students did not appear for the examination. If 2 students have passed in all three subjects, 2 students have passed in Physics and Chemistry both but not in Mathematics, 2 students have passed in Chemistry and Mathematics both but not in Physics, and 8 students have passed in Physics and Mathematics both but not in Chemistry, then how many students have passed in Mathematics only?

Option 1: 19

Option 2: 18

Option 3: 20

Option 4: 17