'Thirty six' in the Bible

The men of Ai killed about thirty-six of Israel’s men, and chased them from the gate as far as [the bluffs of] Shebarim and struck them down as they descended [the steep pass], so the hearts of the people melted [in despair and began to doubt God’s promise] and became like water (disheartened).

and Lebaoth and Shilhim and Ain and Rimmon; in all twenty-nine cities with their villages.