Forbes - The World Billionaires 2012

#10 - Karl Albrecht
age - 92
Net worth - $25.4B
Country of Citizenship - Germany

The German entrepreneur who founded the discountsupermarket chain Aldi with his brother Theo.

#9- Li Ka-Shing
age - 83
Net worth - $25.2B
Country of Citizenship - Hong Kong

Presently, he is the Chairman ofHutchison Whampoa Limited (HWL) and Cheung Kong Holdings; through them, he is the world's largest operator of container terminals and the world's largest health and beauty retailer

#8- Stefan Persson
age - 64
Net worth - $26B
Country of Citizenship - Sweden

The chairman and main shareholder in fashion company Hennes & Mauritz (H&M), which was founded by his father Erling Persson

#7- Eike Batista
age - 55
Net worth - $30B
Country of Citizenship - Brazil

Owner and president of Brazilian conglomerate EBX Group

#6- Larry Ellison
age - 67
Net worth - $36B
Country of Citizenship - United States

The co-founder and chief executive officer of Oracle Corporation, one of the world's leading enterprise software companies

#5- Amancio Ortega
age - 75
Net worth - $37.5B
Country of Citizenship - Spain

The founder, along with his then-wife Rosalía Mera, and chairman of the Inditex Group

#4- Bernard Arnault
age - 63
Net worth - $41B
Country of Citizenship - France

The chairman and chief executive of luxury group LVMH

#3- Warren Buffett
age - 81
Net worth - $44B
Country of Citizenship - United States

American business magnate, investor, and philanthropist. He is widely regarded as one of the most successful investors in the world. Often introduced as "legendary investor, Warren Buffett", he is theprimary shareholder, chairman and CEO of Berkshire Hathaway.

#2-Bill Gates
age - 56
Net worth - $61B
Country of Citizenship - United States

American business magnate, investor, philanthropist, and author. Gates is the former CEO and current chairman of Microsoft,
the software company he founded with Paul Allen

#1- Carlos Slim Helu & Family
age - 72
Net worth - $69B
Country of Citizenship - Mexico

The chairman and chief executive of telecommunications companies Telmex and América Móviland has extensive holdings in other Mexican companies through his conglomerate, Grupo Carso SAB, as well as business interests elsewhere in the world.