1.Judy ann interviews 110 grade 7 at a certain high school on the clubs that they belong. She learns that
50 students belong to the math club, 35 students belong to the science club, 15 students belong to the Glee club, 20 students belong to both math and science clubs,
10 students belong to both the science And Glee clubs and 8 students belong to both math and glee clubs and 5 students belong to the 3 clubs.

A. How many students belong to the math club only?
B. How many students belong to the science club only?
C. How many students belong to the glee club only? ​