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

Your

Father's

Daughter's

Aunt's

Niece's

Father in law

is your UNCLE !!

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

What relation is your cousin's sister's father in law's daughter's grandmother to you ?

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

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

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

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