P's father is Q's son. M is the paternal uncle of P and N is the Brother of Q. How is N related to M ?

Explanation:-

P's father is Q's son. So, Q is P's grandfather. M is the paternal uncle of P. So M is the brother of P's father. This means that M is also Q's son. N is the brother of Q. Thus, N is the paternal uncle of P.