Mumbai: Indian indices opened on a positive note on Tuesday with Nifty above 17,800. The Sensex was up 231.10 points or 0.38% at 60662.94, and the Nifty was up 63.80 points or 0.36% at 17834.70. About 1249 shares have advanced, 720 shares declined, and 123 shares are unchanged. Among the top gainers are Infosys, Tata Steel, TCS, HCL Technologies, while top losers are Adani Enterprises, Appolo hospitals, Grasim, Sbi life.