Add Yahoo as a preferred source to see more of our stories on Google. We like to think that we're pretty good at math, especially after years of schooling. But every once in a while, a simple ...

Two students in Danielle Adler’s kindergarten class at Marcus Hook Elementary School in Marcus Hook, Pa., prepare for an addition problem. Credit: Holly Korbey for The Hechinger Report The Hechinger ...

A seemingly easy math puzzle making the rounds on the internet may not be all that it seems as the simple solution requires somewhat complex thinking. The brain-teaser, which has gone viral on X ...