Test your IQ with this challenging brain teaser! Spot the odd number hidden in the '101' sequence series within 11 seconds.

Many online IQ tests come across as little more than digital parlor tricks. Users often end up with vague, unverified results. In other cases, the platforms tell people what they want to hear.

Also, IQ tests intentionally try to capture some of the factors of intelligence, and while it does accurately reflect a range, by no means does it tell you everything about the subject’s ...