How many movies have Arja Janardhana Rao and K. V. Mahadevan collaborated on?

They have worked on 3 movies together! Their first movie together was Sampoorna Ramayanam (1972) while their highest rated movie together was Sri Ramaanjaneya Yuddham (1975). They have not worked together since Thyagayya (1981). They are most known for their history films together.