However , in West Bengal , Tripura , Mizoram , Orissa , and Assam , the Indian rupee is officially known by names derived from the Sanskrit word à à à à ( Tanka ) which means money . Thus , the rupee is called à à 3\/4 à à 3\/4 ( Taka ) in Bengali , à à à 3\/4 ( tÃ ka ) in Assamese , and à à à à à 3\/4 ( Tanka ) in Oriya and is written as such on Indian banknotes . The Indian rupee ( Devanagari : à à à à à 3\/4 ) ( sign : ; code : INR ) is the official currency of the Republic of India .