India defeated Australia by six wickets at the third Twenty20 International to win the three-match series 2-1 at the Rajiv Gandhi International Cricket Stadium in Hyderabad on Sunday. India made 187 for the loss of 4 wickets in 19.5 overs as Virat Kohli (63) and Suryakumar Yadav (69) each scored a brilliant half-century and contributed to a century partnership while Australia scored 186/7 in 20 overs.