6. Mark Zuckerberunberg
Mark Zuckerberg is an American technology entrepreneur and a Philanthropist and he is a dropped out from Harvard. He is the Chairman, co-founder, leader, and chief executive officer of Facebook and in 2007 at the age of 23, he became the youngest self-made billionaire and he is the only one under age of 40 in the top 20 Billionaire list.
7. Larry Elison
Larry Elison studied at the University of Illinois at Urbana-Champaign and the University of Chicago, but struggled with his medical courses and dropped out. He is an American businessman, Entrepreneur, and a Philanthropist and he is the Chairman, co-founder, and chief executive officer of Oracle cooperation.
8. Jan koum
Jan Koum is a Ukrainian American Entrepreneur and a Computer Programmer. He is the co-founder and CEO of Whatsapp and he is under the list of 400 richest American people.
9. Travis Kalanick
Travis Kalanick studied computer engineering at UCLA and he decided to quit college just before the month of Graduating and after that, he becomes the founder and CEO of Uber.
10. John Mackey
John Mackey is an American Businessman and he was studied religion and philosophy at the University of Texas before dropping out and he is the co-founder and CEO of Whole Food Market which he founded in 1980.