The three numbers on fertilizer are the N-P-K ratio, which stands for nitrogen, phosphorus, and potassium. These three nutrients have separate functions and are essential to a plant's growth and health. Fertilizers can be organic or synthetic, and come in ...

The median is the middle number in a sorted ascending or descending list. It can be more descriptive of the dataset than the average. It’s quite different from the mean.

Have you ever sat in a math classroom and wondered, “When will I ever use this?” You might have asked yourself this question when you first encountered “imaginary” numbers, and with good reason: What could be less practical than a number described ...

Apple's Numbers spreadsheet for Mac, iPhone, and iPad, is not as powerful as Microsoft Excel, but most users will be hard-pressed to find its limitations — and will immediately see how much easier Numbers is for practically every use. Numbers is a ...

Imaginary numbers might seem like unicorns and goblins — interesting but irrelevant to reality. But for describing matter at its roots, imaginary numbers turn out to be essential. They seem to be woven into the fabric of quantum mechanics, the math ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Dr. JeFreda R. Brown is a financial consultant, Certified Financial Education Instructor, and ...

Prime numbers are the building blocks of mathematics, and yet their distribution is a mystery that has stumped mathematicians for centuries

Is today your lucky day? The numbers for the Mega Millions jackpot will be drawn at around 11 p.m. Eastern Daylight Time.