The idea of an animal that can count or do math might sound like something out of a viral news story or TikTok video. But a sense of quantity, sometimes called "numerosity," appears across a ...

The puzzle reads: 3 + 4 = 19 5 + 6 = 4 1 2 + 8 = 66 5 + 1 = ? At first glance, none of these make sense. According to standard math, 3 plus 4 is 7 — so how do we ...

A simple arithmetic problem has left internet users scratching their heads - with only a few landing on the correct solution to this elementary school-level equation. While most people learned the ...