Who are the college dropouts who went on to become billionaires?

Some of the world's richest people are college dropouts, including Microsoft Co-founder Bill Gates who had dropped out of Harvard University and is now worth $90.3 billion. Late Apple Co-founder Steve Jobs dropped out of Reed College after attending just one semester. Wipro Chairman Azim Premji dropped out of Stanford University in 1966 following his father's sudden death.