Which one among the following is not a tributary of river Luni?

Which one of the following is not a tributary of the Krishna river?

Which one of the following rivers is not a tributary of Yamuna?

Which of the following rivers is not a tributary of the River Indus ?

Which one of the following rivers is not a tributary of river Brahmaputra?

Which of the following rivers of India is NOT a tributary of Damodar River?