Buddy, 4xMig-29ks take off with full fuel and a strike package of missiles/glide bombs. They fly about 750Nm and get refueled around Porbander. They press on to Tashkent. I am taking that they will not be checked in Pak airspace as we are talking of range alone.Mumbai - Mangalore is approximately 295 NM. It's a further 1000 NM to Tashkent at least (?). Then they've to return the same route.
Once they drop theior drop tanks and also release their weapons, they will be in clean config increasing their return range. They again get refuelled over Porbander to make it back to Deck or can land in Porbander and get refuelled.