ECONOMICS (CBSE/UGC NET)

Detailed explanation-1: -Zuckerberg started Facebook at Harvard in 2004 at the age of 19 for students to match names with photos of classmates. He took Facebook public in May 2012; he now owns about 13% of the company’s stock.

Detailed explanation-2: -Parker was fired from Plaxo in 2004 for his erratic engagement with the company. Interested in the possibilities of social networking, he was intrigued by Thefacebook (later to become Facebook), a social networking Web site for college students cofounded by Harvard University student Mark Zuckerberg.

Detailed explanation-3: -Zuckerberg first became a billionaire in 2008, just four years after founding Facebook. At 23, he was the youngest self-made billionaire at the time, debuting at No. 321 on The Forbes 400, worth $1.5 billion.