What is the chance of a school having gym auditorium library and art music lessons?

There's no single answer to the probability of a school having a gym, auditorium, library, art, and music lessons. It depends heavily on:

* Type of school: A small, rural elementary school is far less likely to have all these facilities than a large, well-funded high school or private school.

* Country/Region: Educational standards and funding vary significantly across the globe.

* Age range of students: Elementary schools might not have auditoriums or extensive art programs compared to secondary schools.

* Funding and resources: Schools with more funding are more likely to have these amenities.

To get even a rough estimate, you'd need to conduct a survey of schools in a specific area and analyze the data. Without that, any probability given would be purely speculative.