I want to know the answer to the following question:
How many people were in Bell's first class?
All the background I'm provided with is that "Teaching his father's system, in October 1872, Alexander Bell opened his "School of Vocal Physiology and Mechanics of Speech" in Boston, which attracted a large number of deaf pupils, with his first class numbering 30 students.". Is that enough to answer the question?
Answer: yes