Conversation so far:
What is the lowest rank in the hereditary peerage?
baron.
How does one address a baron?
CANNOTANSWER.
What is the next higher rank?
viscount.
How many Viscounts are there?
CANNOTANSWER.

Question: Are there set numbers of each rank in the hereditary peerage?
Self-contained rewrite: Are there set numbers of each rank in the hereditary peerage?