CREATE TABLE table_4248 ("Year" FLOAT, "Matches" FLOAT, "Innings" FLOAT, "Not out" FLOAT, "Runs" FLOAT, "High Score" TEXT, "100" FLOAT, "50" FLOAT, "Average" TEXT, "Strike rate" TEXT, "Catches/Stumpings" TEXT)

How many entries for 50 occur when strike rate is 92.81?
SELECT COUNT("50") FROM table_4248 WHERE "Strike rate" = '92.81'
SELECT COUNT("50") FROM "table_4248" WHERE "Strike rate" = '92.81'