Which two rivers flow in the region between Gulbarga and Vijayanagara Hampi?

Chandra and Bhaga river in flow through the region:

The origin point of Luni river, which flows in Rajasthan and Gujarat, is

The river which is different in terms of the direction of flow, is:

Which of the following rivers flow through antecedent valleys?

Which river flows through Goa before emptying into the Arabian Sea?