The Top 10 World's Richest Entrepreneurs

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9. Sergey Brin - $31.8 billion

Along with fellow Google co-founder Larry Page, Sergey Brin is one of the richest men in the world, according to Forbes's latest Rich List. While Brin has taken on a lesser role at Mountain View, California-based search giant than Page, Brin is seen as the main driving force behind Google Glass.