On Friday, Indian stock market indices, Sensex and Nifty 50, are expected to open lower following mixed global market cues. Previous Trading Session On Thursday, the Sensex dropped by 494.75 points, or 0.61%, to close at 81,006.61, while the Nifty 50 declined by 221.45 points, or 0.89%, closing at 24,749.85. FII and DIIs On October …