CREATE TABLE table_24553 ("Municipality" TEXT, "Type" TEXT, "District" TEXT, "Area  ( km\\u00b2 ) " TEXT, "Population  ( 2010 ) " FLOAT, "Pop. Density  ( per km\\u00b2 ) " TEXT, "No. of Barangays" FLOAT, "Municipal Mayor" TEXT)

How many different municipal mayors were there in the municipality with an area of 42.66 km2?
SELECT COUNT("Municipal Mayor") FROM table_24553 WHERE "Area (km\u00b2)" = '42.66'
SELECT COUNT("Municipal Mayor") FROM "table_24553" WHERE "Area (km\u00b2)" = '42.66'