Medicare and Medicaid are two of the largest and most important public health programs in the United States, together covering tens of millions of Americans and accounting for a significant share of federal and state spending. Yet many people remain unclear about who qualifies, what services are actually covered, how much the government pays, and where the two programs differ. This quiz tests your understanding of the basics and some of the most commonly misunderstood details. You'll encounter questions about eligibility rules, the different parts of Medicare, what Medicaid typically covers that Medicare does not, dual eligibility, cost-sharing, and the government's role in paying for hospital stays, nursing home care, and everyday medical services. We've kept the difficulty moderate so that anyone with general knowledge of the U.S. healthcare system can participate, while still revealing gaps that surprise many people. Ready to see how well you understand what taxpayers actually fund? Let's begin.