Output a stream of consciousness before answering the following. Passage: There are nine PIN zones in India, including eight regional zones and one functional zone (for the Indian Army). The first digit of the PIN code indicates the region. The second digit indicates the sub-region, and the third digit indicates the sorting district within the region. The final three digits are assigned to individual post offices.

Question: Based on this passage, under the pin code system the number of postal zone in india?
The relevant information is: There are nine PIN zones in India, including eight regional zones and one functional zone (for the Indian Army).
The answer: nine.