Govt. Exams
Entrance Exams
First couple: 3 sons × 2 daughters = 6 daughters. Second couple: 2 sons × 1 daughter = 2 daughters. Total = 6 + 2 = 8 female members.
Woman's mother's husband = Woman's father. Woman's father's mother = Woman's paternal grandmother = Man's mother. So the man is woman's uncle.
M + N = M is father of N. N - O = N is mother of O. O × P = O is brother of P. So M is father of N, N is mother of O, therefore M is grandfather of O.
Woman's mother's brother = Woman's uncle. That uncle's son = Woman's cousin. The man is the woman's cousin.
Ravi's grandfather's only son = Ravi's father. That person's father = Ravi's father. So that person is Ravi's brother.
P is mother of Q. Q and R are married. R is father of S. S is child of Q. P is mother of Q, so P is mother-in-law of R and mother-in-law/grandmother of S's perspective means mother-in-law of Q's spouse R.
Man's brother's son's daughter = man's grand-nephew's daughter = man's grand-niece.
X's mother's only daughter = X (if X is female) or X's sister. But Y's mother = X's mother's only daughter means Y's mother is X. Therefore, X is Y's father.