CREATE TABLE table_35720 ("Rocket" TEXT, "Country" TEXT, "Family" TEXT, "Launches" FLOAT, "Successes" FLOAT, "Failures" FLOAT, "Partial failures" FLOAT)

What were the average launches for Ariane 5 and 0 partial failures?
SELECT AVG("Launches") FROM table_35720 WHERE "Rocket" = 'ariane 5' AND "Partial failures" < '0'
SELECT AVG("Launches") FROM "table_35720" WHERE "Partial failures" < '0' AND "Rocket" = 'ariane 5'