Learn how to calculate payback and discounted payback in Excel with formulas, SCAN, XMATCH, LET, and SWITCH, plus ...

Watch as a frustrating math problem inspires a creative journey from paper to precision engineering. See how a simple ...

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French scholars argued that the 17th-century Pascaline should go to a public collection and stay within the country. But a ...

Who doesn’t love a good math holiday? Most people know about Pi Day (3/14), but there are even rarer days on the calendar ...

The keyboard is magnetically attached to the phone’s body, and the company has announced a re-mappable T9 keyboard and an iPod-style touch wheel, which it currently calls the Sundial.

Once upon a time, owning a calculator watch was the epitome of cool. Well, for a very specific subset of the population with ...

In many low and middle-income countries, adult mortality estimates are derived from surveys and censuses conducted through ...

APY APY stands for Annual Percentage Yield, which is the actual rate of return per year, including compound interest. The APY is typically the rate you'll see featured for the CD you're considering.

Energy bills will rise marginally in January - fuelling speculation of action in the budget. Read about this, plus our week of special content on consumer rights, in the Money blog below - and listen ...