Get out your timer and number two pencil to see if your arithmetic skills are still sharp.

Add Yahoo as a preferred source to see more of our stories on Google. The internet is often a place where you'll find a lot of debate, and today, people are arguing over what the right answer to a ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A seemingly simple math problem that produced markedly different ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A seemingly impossible math puzzle, discovered stuck to a tree by a ...

A seemingly simple math problem has left social media users confused as they argue over the correct answer. The equation, shared by user @BholanathDutta on X, appears simple enough for grade school ...

Number theorists are always looking for hidden structure. And when confronted by a numerical pattern that seems unavoidable, they test its mettle, trying hard—and often failing—to devise situations in ...

A mathematician may have just proved the impossible possible. For 30 years, mathematicians wondered if you could have an infinite set of numbers where each pair of numbers adds up to a unique value, ...