How many movies have Lata Mangeshkar and Naresh Malhotra collaborated on?

They have worked on 4 movies together! Their first movie together was Kabhi Kabhie (1976) while their highest rated movie together was Doosara Aadmi (1977). They have not worked together since Yeh Ishq Nahin Aasaan (1984). They are most known for their romance films together.