Magadha and Anga plains are parts of

The Ganga river is an example of :

Identify the only tributary of River Ganges which rises in the plains.

Kishanganga is a tributary of –

Among the following tributaries, which one is the part of the Ganga river basin?

Which of the following states is/are part of the Ganga Basin? 1. Chhattisgarh 2. Himachal Pradesh 3. Rajasthan