IQ test

John’s father have 5 sons their names are

1. zaze
2. zeze
3. zize
4. zoze

The name of the 5th son is John.

* As given, the names of the sons are:
Zaze, Zeze, Zize, Zoze, so we can notice that all the sons have similar letters in their names except the second letter.

* The second letters are a, e, i and o, so following the pattern we might think that the name of the 5th son will have ‘u’ as the second letter.

So, it might be Zuze but it is logically incorrect.

* The name of the 5th son is already given in the question.

‘John’s father’ —-> so John is also a son of the man.