CREATE TABLE table_65249 ("Opposing Team" TEXT, "Against" FLOAT, "Date" TEXT, "Venue" TEXT, "Status" TEXT)

Name the average Against that has a Venue of twickenham , london on 25 november 1978?
SELECT AVG("Against") FROM table_65249 WHERE "Venue" = 'twickenham , london' AND "Date" = '25 november 1978'
SELECT AVG("Against") FROM "table_65249" WHERE "Date" = '25 november 1978' AND "Venue" = 'twickenham , london'