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Here are a few problems to keep your number sense sharp during the summer months. What is the greatest positive three-digit integer that is divisible by 5, 7 and 9? We know that any three-digit number...

While snowstorms in Middle Town, USA routinely leave up to 5 feet of snow on the ground, the first winter snowstorm deposits, on average, 18.7 inches of snow. According to the public works department...

This time of year, various religions and cultures celebrate a variety of holidays, and there are as many reasons for celebrating as there are religions and cultures. One theme runs through all holiday...

In these summer months, a common problem people suffer from is dehydration – not enough water in their body. Waiting until you feel thirsty is not a good indicator that it’s time to drink water. In...

When paying for her back-to-school clothing purchase, Kristal learned that it was the final day of her state’s tax-free holiday. Kristal decided to purchase a pair of earrings using the $15 she would...

On September 5, 1882, the first Labor Day parade was held in New York City with 20,000 workers marching up Broadway. Within the next few years, the idea spread from coast to coast, and all states...

Civil Rights leader and Nobel Prize winner Martin Luther King, Jr. was born January 15, 1929. On January 13, 1979, a 15-cent stamp was issued by the United States Postal Service as part of the Black...

Mother's Day is a holiday honoring mothers and is celebrated on the second Sunday in May in the United States. In 1914, President Woodrow Wilson declared the first national Mother's Day. Mother's Day...

The second round of the Major League Baseball play-offs is “best out of 5,” meaning that two teams will play each other until one team wins three games. How many different ways could this play-off...

Gretchen is going to make a witch’s hat for Halloween. Her pattern consists of a right circular cone without a base attached to a circle with a hole cut out of the middle, as shown below. The hole is...