Q: How many years Ghiyas ud din Balban was as a Sultan?  

Ghiyas ud din Balban (reigned: 1266-1287) was the ninth sultan of the Mamluk dynasty of Delhi. Ghiyas ud Din was the wazir and heir of the last Shamsi Sultan, Nasir ud-Din. He reduced the power of the treacherous nobility and heightened the stature of the sultan. In spite of having only few military achievements, he was the most powerful ruler of the sultanate between Shamsuddin Iltutmish and Alauddin Khilji.

Balban was the greatest of the Slave Kings. His Original name was Baha Ud Din.. He was an Ilbari Turk. When he was young he was captured by the Mongols carried to Ghazni and sold to Khawaja Jamal din of Basra, a man of piety and learning. The latter then brought him to Delhi in 1232 AD along with other slaves and all of them were purchased by Iltutmish. Balban Belonged to the famous band of 40 group of Turkish slaves of Iltutmish Ghiyas made several conquests, some of which were as vizier. He routed the Mewats that harassed Delhi and reconquered Bengal, all while successfully facing the Mongol threat, a struggle that spent his son and heir's life. So it came to pass that upon his death in 1287, his grandson Qaiqubad was nominated sultan, undermining the achievements of his grandfather.