CREATE TABLE table_20452 ("S No" FLOAT, "Team  ( A ) " TEXT, "Team  ( B ) " TEXT, "Winner" TEXT, "Margin" TEXT, "Match Date" TEXT)

Name the most number for 74 runs margins
SELECT MAX("S No") FROM table_20452 WHERE "Margin" = '74 runs'
SELECT MAX("S No") FROM "table_20452" WHERE "Margin" = '74 runs'