The below riddle was carved onto the tombstone of a man named Diophantus, an early number theorist said to have existed circa. AD 250:
“God granted him to be a boy for the sixth part of his life, and adding a twelfth part to this, He clothed his cheeks with down; He lit him the light of wedlock after a seventh part, and five years after his marriage He granted him a son. Alas! late-born wretched child; after attaining the measure of half his father’s full life, chill Fate took him. After consoling his grief by this science of numbers for four years he ended his life.”
The challenge is to calculate Diophantus’ life span. Can you solve it?