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Your XFINITY Connect session has timed out due to inactivity. Click here to go back close Youngest Billionaires in the World

No. 2: Mark Zuckerberg

Age: 27
Net Worth: $17.5 billion

Don't let the hoodie and the sandals fool you, the Facebook founder controls 56.9 percent of firm's total pre-IPO voting power. The company's IPO is expected to hit in the next few months, possibly boosting his net worth even higher. Zuckerberg is only 8 days older than former roommate Dustin Moskovitz.

(Photo: Justin Sullivan/Getty Images)

More From Forbes:
The World’s Billionaires
The World’s Billionaire Newcomers
The World’s Billionaire Dropoffs
The Oldest Billionaires in the World

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

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