The princely states varied greatly in status, size, and wealth; the premier 21-gun salute states of Hyderabad, Jammu and Kashmir were each over 200,000 km2 in size, or slightly larger than the whole of Great Britain. In 1941, Hyderabad had a population of over 16 million, comparable to the population of Demographics of Romania at the time, while Jammu and Kashmir had a population of slightly over 4 million, comparable to that of Switzerland. At the other end of the scale, the non-salute principality of Lawa Thikana covered an area of 49 km2, or smaller than Bermuda, with a population of just below 3,000. Some two hundred of the lesser states had an area of less than 25 km2 (10 mi2). At the time of Indian independence in 1947, Hyderabad had annual revenues of over Rs. 9 crore (roughly £6.75 million/$27.2 million in 1947 values, approximately £240 million/$290 million in 2014 values), and its own army, Deccan Airways Limited, telecommunication system, railway, postal system, currency, radio service and a major public university; the tiny state of Lawa had annual revenues of just Rs. 28,000 (£2100/$8463 in 1947 values, £73,360/$89,040 in 2014 values).
Question: How many premier 21-gun salute states are there?
Answer: 3