A contractor builds a house in 23 days, 19 hours and 41 minutes. How long will he take to build 49 such houses ? (Answer in weeks, days, hours and minutes)
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SIS Group Enterprise is a private security firm in India, Australia and New Zealand. It was set up in 1985 by Ravindra Kishore Sinha and is one of the largest manpower security firms in the Indo-Pacific region with sales in excess of ₹8,500 crore.
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