Introducing a man to her husband, a woman said, "His brother's father is the only son of my grandfather." How is the woman related to this man?
A
Mother
B
Aunt
C
Sister
D
uncle
E
Nephew
Correct Answer: Sister
Only son of woman's grandfather---Woman's father; Man's brother's sister---Man's father.So, man's father is woman's father i.e. woman is the man's sister.