SELECT "Overall" FROM table_68187 WHERE "Combined" = '1' AND "Downhill" = '24'
How many overalls has 1 combined and 24 downhills?
CREATE TABLE table_68187 (
    "Season" real,
    "Overall" text,
    "Slalom" text,
    "Giant Slalom" text,
    "Super G" text,
    "Downhill" text,
    "Combined" text
)