Question: Who is the competitor with a downhill of more than 55, and 1st DQ run?
SQL: SELECT "Competitor" FROM "2-17578867-3" WHERE "Downhill" > 55.0 AND "1st run" = 'DQ';

Question: What is the 1st run that is down hill less than 46, and 84.45 points?
SQL: SELECT "1st run" FROM "2-17578867-3" WHERE "Downhill" < 46.0 AND "Points" = '84.45';