10 รอบแข่งไปกี่รอบ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
How many races went for 10 rounds?It is not neccessary to use all the tables.
 table_25668203_2:  (fastest_lap [ VARCHAR ] rnd [ VARCHAR) ]
SELECT COUNT(fastest_lap) FROM table_25668203_2 WHERE rnd = "10"