Your aunt's niece's mother's daughter's brother+in+law is your which relation ?

Your

Aunt's

Niece's

Mother's

Daughter's

Brother in law

is your BROTHER IN LAW !!

What relation is your aunt's nephew's father in law's daughter's grandfather to you ?

What relation is your father's son's mother's sister's daughter's uncle to you ?

What relation is your grandmother's grandson's brother's daughter in law to you ?

What relation is your aunt's husband's daughter's father in law to you ?

What relation is your mother's sister's niece's father in law's son to you ?

What relation is your brother's uncle's son's daughter to you ?