The problem provides information about a class of 25 boys and their textbook ownership. Let E be the set of boys with English books, F with French books, and M with Mathematics books.

The problem provides information about a class of 25 boys and their textbook ownership. Let $E$ be the set of boys with English books, $F$ with French books, and $M$ with Mathematics books.

Given data:

• Total boys in class: $N = 25$
• Number of boys with English books: $|E| = 19$
• Number of boys with French books: $|F| = 17$
• Number of boys with Mathematics books: $|M| = 15$
• Number of boys with English and French books: $|E \cap F| = 16$
• Number of boys with French and Mathematics books: $|