CREATE TABLE table_23859 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directedby" TEXT, "Writtenby" TEXT, "Originalairdate" TEXT, "Production code" TEXT, "U.S.viewers  ( million ) " TEXT)

what i the maximum number in the series where the production code is 3wab07?
SELECT MAX("No. in series") FROM table_23859 WHERE "Production code" = '3WAB07'
SELECT MAX("No. in series") FROM "table_23859" WHERE "Production code" = '3WAB07'