Your father's brother's son's aunt's brother+in+law is your which relation ?

Your

Father's

Brother's

Son's

Aunt's

Brother in law

is your UNCLE !!

What relation is your wife's daughter's grandmother's cousin to you ?

What relation is your father's brother's daughter's sister to you ?

What relation is your uncle's cousin's daughter's aunt to you ?

What relation is your sister's father's brother's son to you ?

What relation is your father's son's aunt's granddaughter to you ?

What relation is your brother's grandfather's wife's grandson to you ?