Which river flows through the states of Uttar Pradesh and Bihar and is a tributary of the Ganges?

Which river is the longest in India and flows through the states of Uttarakhand, Uttar Pradesh, Bihar, and West Bengal?

Which river flows through the states of Arunachal Pradesh and Assam and is a tributary of the Brahmaputra?

Which river flows through the states of Maharashtra and Telangana and is a tributary of the Godavari?

Which river flows through the states of Punjab?

Which river is the largest tributary of the Ganges?