Top 10 self-made billionaires in the world under 40
No 1 Mark Zuckerberg
Wealth: $59.24 billion
Company: Facebook
Age: 33
Age when made $1 billion: 23
Time it took to make $1 billion: 4 years
Country of residence: US
Facebook Founder and CEO Mark Zuckerberg speaks during the annual Facebook F8 developers' conference in San Jose, California, on April 18, 2017. [Photo/Agencies] |