CREATE TABLE table_21638 ("Position" FLOAT, "Team" TEXT, "Played" FLOAT, "Won" FLOAT, "Drawn" FLOAT, "Lost" FLOAT, "Goals For" FLOAT, "Goals Against" FLOAT, "Goal Average 1" TEXT, "Points 2" FLOAT)

How many teams finished with a 2nd points total of 31?
SELECT COUNT("Position") FROM table_21638 WHERE "Points 2" = '31'
SELECT COUNT("Position") FROM "table_21638" WHERE "Points 2" = '31'