Khetan Group, a leading business house which recently sold Rs 3 billion worth of its shares in Gorkha Brewery to Carlsberg Singapore, is now considering investing in service sector. “We want to be the biggest company in the service sector in the country in the next three years,” said Rajendra Khetan, chairman of the Group.  “We intend to take our market capitalization to Rs 20 billion after three years,” he said. The Group plans to invest in education and health sectors. Khetan says that there is a big opportunity in service sector in the country. “We have not even tapped 10 percent of the market potential till now,” he said.