Diophantus from Alexandria, often called the "Father of Algebra", is best known for his works on algebraic equations and theories of numbers. He lived around the year 240 AD. However, little is known about his life except for an algebraic riddle that was created by one of his devoted students.

Here it is: Diophantus' youth lasted 1/6 of his whole life. He had his first beard in the next 1/12 of his life. At the end of the following 1/7 of his life, Diophantus got married. Five years later his son was born. His son lived exactly half of Diophantus's life. Diophantus died four years after the death of his son.

How long did Diophantus live?

You have one whole week to solve this quiz; solution will come with your next challenge.
If you cannot solve it, ask your friends for help!

---

Too difficult? No way! you must just try a little harder.
If you absolutely must read the answer (or just check whether yours is correct), just register with us to get it for free and receive a new challenge!

---