Your mother's son's cousin's brother's aunt is your which relation ?

Your

Mother's

Son's

Cousin's

Brother's

Aunt

is your AUNT !!

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

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

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

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

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

What relation is your mother's husband's brother's daughter to you ?