The domestic benchmark indices surged on Friday after the Reserve Bank of India (RBI) reduced repo rate by 50 basis points to 5.50% and cash reserve ratio (CRR) by 100 basis points (in four tranches). Sensex gained 746.95 points or 0.92% at 82,188.99 and the Nifty rose 252.15 points or 1.02% to close at 25,003.05.