Sometimes the easiest riddles are the ones that trick us the most. This short IQ test looks simple at first, but it is designed to make people focus on the pattern instead of reading the question carefully.!

The riddle says Johnny’s father has five sons: Zaze, Zeze, Zize, Zoze, and one more.

Most people try to continue the pattern (like “Zuze”), but the answer is in the first line: it already states that Johnny’s father has five sons.

So the fifth son is Johnny.