In 2018, Moderna galerija was celebrating its 70th anniversary and the Museum of Contemporary Art Metelkova, a part of Moderna galerija, its 7th anniversary. We are publishing the entire content of the Documentary exhibtion 70+7: What's in a Number? A Chronicle of Exhibitions at Moderna galerija for study and research purposes. The exhibition was displayed at the Moderna galerija auditorium from 24 April 2018 to 12 January 2020. Authors of the exhibition: Marko Jenko, PhD; Bojana Piškur, PhD; Bojana Rogina. Design by New Collectivism.