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

Your

Mother's

Brother's

Daughter's

Brother in law

is your BROTHER IN LAW !!

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

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

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

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

What relation is your grandmother's husband's wife's grandson to you ?

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