Tests have become very popular, especially on the internet. Have you noticed this new trend? `What character are you from your favorite book?`, `What dress is best for you to welcome the New Year?`, `Which candy are you?` – portal creators come up with all sorts of things to draw attention to their site.

Although, every now and then, something interesting appears. For example, there are countless attention tests, or as they are also called, tests that determine IQ level. Such challenges not only determine IQ but also excellently train patience and attention.

Today, our editorial team has prepared 4 famous tests for you. A kind of check to see if you can be attentive enough. Well, let`s go!