The 1st ODI match in India was played in Ahmedabad.

Explanation:

During the early years of One Day International (ODI) cricket, matches were played primarily in England and Australia. However, on July 13, 1974, India hosted its first-ever ODI match in Ahmedabad.

1. Introduction to ODI cricket in India:
- ODI cricket is a limited-overs format of the game that revolutionized the sport in the 1970s.
- The first-ever ODI match was played between Australia and England on January 5, 1971, in Melbourne.
- India played its inaugural ODI series against England in 1974, consisting of three matches.

2. India's first ODI series:
- The first ODI match in India was played at the Sardar Vallabhbhai Patel Stadium in Ahmedabad on July 13, 1974.
- The match marked the beginning of a three-match ODI series between India and England.
- The series was played to commemorate the 1974 completion of 25 years of Indian independence.

3. The venue - Sardar Vallabhbhai Patel Stadium, Ahmedabad:
- The Sardar Vallabhbhai Patel Stadium, commonly known as the Motera Stadium, is located in Ahmedabad, Gujarat.
- It is one of the largest cricket stadiums in the world, with a seating capacity of over 110,000 spectators.
- The stadium has hosted numerous international cricket matches, including Tests, ODIs, and T20Is.

4. Conclusion:
- The first ODI match played in India took place at the Sardar Vallabhbhai Patel Stadium in Ahmedabad on July 13, 1974.
- Since then, cricket has grown immensely in popularity in India, and the country has become a powerhouse in the sport.
- Ahmedabad has continued to host many important cricket matches over the years, including the recently inaugurated world's largest cricket stadium at the same venue.