Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. I’m convinced there ...

Digits is now available to play for free in beta for a limited time. Digits is now available to play for free in beta for a limited time. is a senior reporter covering technology, gaming, and more. He ...

The New York Times has another excellent little puzzle game to add to your daily Wordle. This one, however, taps into your math skills rather than your vocabulary. Still, I find the two rather ...

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. I like ...

It's Pi Day - the day that math geeks across the globe collectively pause to celebrate the first three digits of pi, or 3.14. The mathematical constant, which is the ratio of a circle's circumference ...

E= (A+B) - (C-D) where A=7, B=5, C=6, and D=3 If you observe the sequence of table above, 1, 3, 5, 9, 11, 13 are increasing with a difference of 2 and 1, 2, 3, 5, 6 ...