Equity benchmark indices Sensex gained more than 140 points and Nifty rose 57 points in early trade on Friday as investors seemed to be relatively cautious amid mixed global cues. Economic growth of 7.8 per cent in the three months ended June, the highest in the past four quarters, helped investor sentiments. The 30-share Sensex climbed 142.02 points or 0.22 per cent to 64,973.43 points, while the broader Nifty went up 57.60 points or 0.3 per cent to 19,311.40 points. The majority of the stocks on both...