amaltahlil95 amaltahlil95 03-04-2020 Mathematics contestada Here are the numbers of children in 11 elementary school classes. 20, 16, 16, 20, 19, 20, 18, 20, 18, 18, 18 Find the modes of this data set. If there is more than one mode, write them separated by commas. If there is no mode, click on "No mode."