Explanation:Brahmaputra:The Brahmaputra, one of the largest rivers in the world, has its origin in the Chemayungdung glacier of the Kailash range near the Mansarovar lake.From here, it traverses eastward longitudinally for a distance of nearly 1,200 km in a dry and flat region of southern Tibet.It enters India west of Sadiya town in Arunachal Pradesh.The Brahmaputra receives numerous tributaries in its 750 km long journey through the Assam valley. The Brahmaputra enters Bangladesh near Dhubri and flows southward.In Bangladesh, the Tista joins it on its right bank from where the river is known as the Jamuna.It finally merges with the river Padma, which falls in the Bay of Bengal.Thus, Brahmaputra river flows thorughAruanachal Pradesh and Assam.Additional InformationBarak river:This river has a length of 1900km.Its flows through the state of Manipur, Nagaland, Mizoram and Assam.In Bangladesh, it enters by the name of Surma.Then it flows into the Bay of Bengal.Tlawng:This is a river of Mizoram.Its length is 185.5km.Some tributaries of this river are Tut, Teirei, and Ngashih.Gomati river:This river flows through the North Indian state of India, Tripura and it also flows through the district of Comilla in Bangladesh.The length of this river is 95km.