No.2: Carlos Slim Helu
Net Worth: $72 billion
Source of wealth: telecom
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Mexican tycoon Carlos Slim participates in an event where his foundation and United States-based Coursera, which provides access to high quality on-line graduate studies, joined forces to spread online courses in Spanish from some of the world's top universities, in Mexico City, Jan 29, 2014. [Photo/icpress.cn]
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