Your mother's sister's husband's son's aunt's brother+in+law is your which relation ?

Your

Mother's

Sister's

Husband's

Son's

Aunt's

Brother in law

is your UNCLE !!

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

What relation is your mother's daughter's aunt's niece to you ?

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

What relation is your aunt's niece's brother's mother to you ?

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

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