Question: who is the youngest richest man in the world?
Answer: Kylie Jenner. Age: 23. Net worth: $1B. ...  and 3.: Sisters Alexandra Andresen and Katharina Andresen. Respective ages: 24 and 25. Net worth: $1.1B each. ...  Gustav Magnar Witzoe. Age: 27. Net worth: $2.3B. ...  Jonathan Kwok. Age: 28. ...  John Collison. Age: 30. ...  Evan Spiegel. Age: 30 years. ...  Patrick Collison. Age: 32 years. ...  Bobby Murphy. Age 32.