RRB Group-D Model Paper 20 with answers for online practice

• The Human Development Index (HDI) is an index that is published by the United Nations Development Programme (UNDP).
• It measures key dimensions of human development. The three key dimensions are -
• A long and healthy life
• Access to education
• A decent standard of living 

About UNDP

• Headquarters - New York, United States
• Administrator - Achim Steiner
• Member Countries - 170 (Oct-2020)