CREATE TABLE table_37919 ("Date" TEXT, "Score" TEXT, "Set 1" TEXT, "Set 2" TEXT, "Set 3" TEXT, "Total" TEXT)

Which Set 1 has a Date of 24 may, and a Total of 57 75?
SELECT "Set 1" FROM table_37919 WHERE "Date" = '24 may' AND "Total" = '57–75'
SELECT "Set 1" FROM "table_37919" WHERE "Date" = '24 may' AND "Total" = '57–75'