CREATE TABLE table_19061741_3 (age VARCHAR, edition VARCHAR, home_or_representative_town_or_province VARCHAR)
When davao city is the  home or representative town or province and clash 2010 is the edition how many ages are there?
SELECT COUNT(age) FROM table_19061741_3 WHERE edition = "Clash 2010" AND home_or_representative_town_or_province = "Davao City"