Taiwan and Hong Kong also recorded very high scores, around 107. However, they were not included in the final country rankings.

Observational skills puzzles are designed to test and improve a person's ability to notice details, patterns, and differences in visual or logical scenarios. These puzzles often require close ...

A brain teaser is like a fun little challenge for your mind. It’s a puzzle or riddle which is designed to make you think creatively and critically, often in ways you’re not used to. At first look, a ...