Q. The northern plain of India has been formed by the interplay of the three major river systems, namely-the Indus, the Ganga and which of the following? Answer:
Brahmaputra
Notes: The northern plain of India has been formed by the interplay of the three major river systems, namely-the Indus, the Ganga and Brahmaputra.The northern plains are also known as the Indo-Gangetic Plains.