Explanation:

Brahmaputra, Ganges and Godavari.

Five of the world's 50 largest rivers, the Brahmaputra, Ganga, Irrawaddy, Godavari and Mahanadi, flow into the Bay of Bengal (BoB) north of 15°N. Seasonal monsoon rain and river runoff create shallow pools of freshwater in the north Bay in summer. The Bay of Bengal is the northeastern part of the Indian Ocean, bounded on the west and northwest by India, on the north by Bangladesh, and on the east by Myanmar and the Andaman Islands of India and Myanmar and the Nicobar Islands of India