In decipher jumbled up description type of questions, a round-about description is given in the form of certain small relationships and direct relationship between the persons concerned is to be deciphered.

If X is the brother of the son of Y`s son, how is X related to Y ?

A. Son
B. Brother
C. Cousin
D. Grandson
E. Uncle
Answer: D . Grandson

Justification: Son of Y's son -- Grandson;
Brother of Y's grandson -- Y's granson.