Abstract: The change-making problem is to represent a given value with the fewest coins under a given coin system. As a variation of the knapsack problem, it is known to be NP-hard. Nevertheless, ...

One of the coins created to commemorate the United States' 250th anniversary will begin circulating on Monday, Jan. 5, the U.S. Mint announced on social media. The Mayflower Compact Quarter is the ...

You don’t need to be a seasoned collector or visit a coin shop to stumble upon valuable U.S. coins—some rare and sought-after pieces still show up in everyday pocket change. From minting errors to low ...

To combat the flight of silver from the national stockpile at West Point, I.Y., I resident Johnson last week pro posed the first basic change in U.S. coin age since Alexander Hamilton adopted silver ...

Add Yahoo as a preferred source to see more of our stories on Google. The growing numbers of people who tend to get their news from other sources, meanwhile—including social media platforms—are ...

Add Yahoo as a preferred source to see more of our stories on Google. VIRGINIA BEACH, Va. (WAVY) — Could you have a penny worth way more than one cent? Or a quarter worth a small fortune? A 1943 ...

In just about an hour, more than 80 volunteers helped transform Sunken Gardens, planting thousands of flowers in a vibrant new display inspired by the patterns and colors of American quilts. In just ...