According to Official Guinness Records,
The largest quiz has 4,900 participants, and was achieved by Pratigya Samaj Seva Kalyan Samiti (India) at Allauddin Khan Stadium in Maihar, Madhya Pradesh, India, on 18 June 2017.The attempt was made around the idea of "right to education". It symbolized the need for education and eventual job opportunity for children coming from the underprivileged section of Indian society
For a complete list of 2017 records, please visit 2017 Guinness Records in India.