These 5 numbers are made of matchsticks. There is one missing number. This IQ test is an excellent way to test your attentiveness and critical thinking skills. Studies suggest that individuals who ...

Optical illusions are visuals designed to trick our minds and can be a simple IQ test. They test our understanding of reality, depth and perspective as we try to understand what's in front of us.

But it’s not. There is one mistake in the picture. This IQ test is an excellent way to test your attentiveness and thinking skills. Look at the image and study it carefully. Have you spotted the ...