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

Your

Sister's

Brother's

Cousin's

Aunt's

Son's

Father

is your UNCLE !!

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

What relation is your father's mother's grandson's wife to you ?

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

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

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

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