Who was 2nd and 3rd President of India ?

The second president of India wasDr. Sarvepalli Radhakrishnan. 1962 election- Radhakrishnan was a prominent philosopher, writer, a Knight of the Realm and also held the position of vice chancellor of the Andhra University and Banaras Hindu University.

Thethird president of India wasDr.Zakir Hussain.

Varahagiri Venkata Giribecame Acting President of India in 1969 following the death of Zakir Hussain, who died in office.Varahagiri Venkata Giri was elected President a few months later. He remains the only person to have held office both as a president and acting president.