These quizzes seek to test your IQ by asking you various challenging questions about all kinds of subjects. Take each quiz to find out if you're a genius (I bet you are). Time to test your vocabulary ...

A challenging optical illusion is testing people's observation skills by hiding a single '795' within a grid of '765s'. This ...

Average IQ varies depending on geographic location, resource access, and much more.

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 ...

IQ tests challenge your intelligence and the ability to observe minute details. You will be among the top 1% of readers if ...