CREATE TABLE table_name_21 (tackles VARCHAR2, yards VARCHAR2, fumr VARCHAR2, totaltk VARCHAR2)

what is the total number of tackles when fumr is 0, totaltk is 54 and yards is less than 0?
SELECT COUNT(tackles) FROM table_name_21 WHERE fumr = 0 AND totaltk = 54 AND yards < 0
SELECT COUNT("tackles") FROM "table_name_21" WHERE "fumr" = 0 AND "totaltk" = 54 AND "yards" < 0