This document provides an introduction to modern banking and Punjab National Bank (PNB) in India. It defines what a bank is, describes the different types of banks (public sector banks and private sector banks), and discusses the history and role of banking in India. The document specifically focuses on PNB, providing context about its establishment and services. It conducted a study interviewing 100 PNB customers in Patna to evaluate their satisfaction with the bank's services and identify any issues. The results of the study and analysis of customer feedback are also summarized.