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

Your

Uncle's

Brother's

Son's

Brother in law

is your BROTHER IN LAW !!

What relation is your sister's brother's cousin's wife to you ?

What relation is your daughter's grandmother's sister's uncle to you ?

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

What relation is your brother's cousin's father in law's son to you ?

What relation is your father's sister's nephew's brother in law to you ?

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