The Torah Shleimah Megilas Esther brings the [Medrash] Esther Rabbo. On the pasuk1:10 regarding the 7 Sorisim:Royalty never has fewer than 7 Sorisim serving the king. (Esther Rabbo 3:12) On the pasuk 2:3 HayGay Saris Hamelech: Mochui (Saris) Hoyo. (Esther Rabbo 5:3) - Danny