The monetary unit of India is composed of two parts: the rupee (5 letters) and the paisa (5 letters). The rupee is the main currency of India and is divided into 100 paise. The rupee has been in use since ancient times and is one of the oldest currencies in the world. The paisa is a subunit of the rupee and is used for smaller transactions. Both the rupee and the paisa are issued by the Reserve Bank of India.