How many dates of vacancy were on 30 october 2010?
CREATE TABLE table_27683516_3 (team VARCHAR, date_of_vacancy VARCHAR)
SELECT COUNT(team) FROM table_27683516_3 WHERE date_of_vacancy = "30 October 2010"
### Context: CREATE TABLE table_27683516_3 (team VARCHAR, date_of_vacancy VARCHAR) ### Question: How many dates of vacancy were on 30 october 2010? ### Answer: SELECT COUNT(team) FROM table_27683516_3 WHERE date_of_vacancy = "30 October 2010"