In Descending order: The large no. will come first $$3.1, 3.0,2.9,2.9, 2.8, 2.8, 2.7, 2.7,2.6, 2.5,2.5, 2.4,2.3, 2.2,2.1$$ $$3.1$$ kg is the highest weight among given weights.