A brain teaser challenge is a type of IQ test that mostly involves solving a puzzle, cracking a code, finding a hidden object ...

Try this optical illusion test and spot the inverted 94 in 7 seconds to challenge your vision and brain power.

So, how was the challenge? Okay, congratulations to those who could have spotted the Hidden Lily Flower among these Roses in ...

A Brain teaser is a type of puzzle, which is a short, playful puzzle designed to stretch your mind and make you smile. It ...

This is a straightforward vocabulary test, so if you've ever taken the SATs, this will feel totally familiar. Take the quiz here. It's highly unlikely you'll ever need to write something without spell ...

Why go through trouble of taking an IQ test when you've got chemistry at your disposal? Researchers at England's John Radcliffe Hospital, in Oxford, report that our brain's pH--how acidic or alkaline ...