When talking about millennial billionaires, the first name that pops to many of us is Mark Zuckerberg . And while becoming a billionaire is not an easy task, millennials are doing a fair job with keeping up with the world of billionaires. However, despite the fact that it is estimated that there are only 78 millennial billionaires out of more than 2,000 billionaires, unlike previous generations it did not take ...