CREATE TABLE table_23185 ("Rank" FLOAT, "Mountain Peak" TEXT, "Mountain Range" TEXT, "Elevation" TEXT, "Prominence" TEXT, "Isolation" TEXT)

How many different isolation numbers does the Jack Mountain peak have?
SELECT COUNT("Isolation") FROM table_23185 WHERE "Mountain Peak" = 'Jack Mountain'
SELECT COUNT("Isolation") FROM "table_23185" WHERE "Mountain Peak" = 'Jack Mountain'