Final answer:
The benefit of using the lottery system in ancient Greece was that it provided a means of redistributing wealth and helping the needy. It also promoted social mobility.
Step-by-step explanation:
The benefit of using the lottery system in ancient Greece was that it provided a means of redistributing wealth and providing relief to the needy. The lottery allowed individuals who were struggling financially to have a chance at winning a large sum of money, which could greatly improve their living conditions. It also promoted social mobility by allowing individuals to potentially rise from poverty to wealth through the luck of winning the lottery.