Australia skipper Steve Smith said India were deserving winners as they played better cricket than the visitors after the 5th and final ODI on Sunday.
He said Australia were 50 runs short of what could have been a winning score on the Nagpur wicket in the 5th ODI.
"Probably around a 300 wicket, I think. Finchy (Aaron Finch) and Davey (David Warner) played really well, and maybe one of our top four needed to go on and make a big score," he said.
"It was a disappointing performance, and there's a few things for us to look at. We just need to get the right balance and put consistent performances on the board.
"We've played some good cricket at times, but we've been outplayed and India thoroughly deserved to win. You've still got to try and keep a positive frame of mind. We did a few things well in this series -- we just need to do them more consistently. We've got to let this go pretty quickly, and we have the T20s in six days, and hopefully we can go home with a trophy," he added.