How many teams have 21 tries for?
CREATE TABLE table_15467476_3 (points_difference VARCHAR, tries_for VARCHAR)
SELECT COUNT(points_difference) FROM table_15467476_3 WHERE tries_for = "21"
### Context: CREATE TABLE table_15467476_3 (points_difference VARCHAR, tries_for VARCHAR) ### Question: How many teams have 21 tries for? ### Answer: SELECT COUNT(points_difference) FROM table_15467476_3 WHERE tries_for = "21"