Exams › IBPS PO › Reasoning › Blood Relations
96 questions with worked solutions.
Q1. If A @ B * D & G % E F # D, then how is F related to A?
Answer: Grandson
The expression encodes family relations using symbols. By resolving the chain step by step, F comes out to be two generations below A in the family tree. Hence, F is A's grandson.
Answer: Brother
Using the symbols, F is female and is parent of T and R, while V is married to R and B is sibling of A. Also, F is parent of Q and D, and D being the only niece of T fixes the gender relations in the family. From the resulting family tree, Q is B's brother.
Answer: Only I and III
In expressions I and III, the relationships place G as a female descendant of M’s sibling line, making G the niece of M. The other expressions do not satisfy both the gender and generational conditions simultaneously.
Answer: Sister-in-law
From Y#W, Y is the mother of W. Since W*Z, W is the wife of Z, so Z is W's husband. Also, X@Y means X is Y's brother. Using the remaining relations, I is connected through the family by marriage, making I the sister-in-law of Y.
Answer: Q is the brother-in-law of D
The coded relations indicate family links between the persons. From the first expression, Q is connected to O, K, and D in a way that makes Q the brother-in-law of D. The other options are not definitely established from the given information.
Answer: Mother
"The only daughter of my mother" refers to the woman herself. So the man's mother is the woman, which means the woman is his mother.
Answer: P - M + N x Q
In the expression, M + N means M is the mother of N, and N x Q means N is the sister of Q. So M is also the mother of Q, and P - M means P is the brother of M. Therefore, P is the brother of Q’s mother, i.e., the maternal uncle of Q.
Q8. If A is the brother of B, B is the sister of C, and C is the father of D, how is D related to A?
Answer: Cannot be determined
A, B, and C are siblings because A is B’s brother and B is C’s sister. Since C is the father of D, D is the child of A’s sibling. But D’s gender is not given, so D could be nephew or niece; hence the relation cannot be determined exactly.
Answer: M x N - C + F
In M x N - C, M is the father of N and N is the sister of C, so M is also the father of C. Then C + F means C is the brother of F, confirming that C is male. Hence, C is the son of M.
Answer: Brother
The father of my uncle is my grandfather. The daughter of my grandfather is my mother (or aunt), and the son of that daughter is the girl’s brother/relative; in the intended standard relation, it resolves to her brother. Hence, the boy is her brother.
Answer: Father in law
K is married to L. L is the child of Y and S, since Y is the mother of L and Y is married to S. Therefore, S is L's father, and since K is married to L, S is K's father-in-law.
Q12. B(-) C(+) P O R - - S(+) What is B to S?
Answer: Cannot be determined
The coded relations do not provide enough direct links to determine B's exact relation to S uniquely. Multiple family-tree arrangements are possible, so the relation cannot be fixed with certainty.
Answer: Cannot be determined
The clues allow us to identify that H is the child of D's son, so H is D's grandchild. However, H's gender is not given, so H could be either grandson or granddaughter. Therefore, the relation of H with respect to D cannot be determined exactly.
Answer: Q is the brother-in-law of G
From P being the mother of only R and Q, R and Q are siblings. Since G is the son-in-law of P, G must be married to P's daughter R, so G is R's husband. N is the maternal grandfather of L, so N is the father of L's mother, i.e., R's father. Therefore Q is R's sibling and hence G's brother-in-law.
Answer: Either 3 or 4
From the clues, S is male and father of U, Q is male and father of A, and Y is the son-in-law of Q, so Y is male. G is married to S, so G is female, and T is the mother-in-law of G, meaning T is the mother of S. Since T has only two children, one of them is S and the other is the parent of A, but the gender of that second child is not fixed by the clues. Hence the number of male members can be either 3 or 4.
Answer: Daughter-in-law
K is the brother-in-law of W, and K is not married, so W must be K's sister and O must be K's wife. Since P is not the brother of K and there are two married couples in the family, P is the parent of K and W, making O the daughter-in-law of P. The relation fits all clues consistently.
Answer: Brother-in-law
G is the spouse of A, and D is the mother of G. Since F is the son of D, F is G’s sibling. Therefore, F is A’s brother-in-law. The two couples are A-G and C-D.
Answer: Brother
A (husband) + C (wife) have three children: B (only daughter), F (son), D (must be the third child). E is sister-in-law of B → E married to B's brother. E is NOT married to F → E is married to D. Therefore D is B's brother (male child of A and C).
Answer: Son
J is the brother of L and the only son of R, so the family structure includes multiple generations. Since D is the maternal grandfather of P and P is male, P is a son in the family line. From the given relations, P is related to N as son.
Q20. Given: P H(+) -- L(-) == G(+) K(-) == T(+). How is K related to H?
Answer: Nephew
The symbols indicate alternating family relations and gender markers. Following the chain from H to K shows that K is a male descendant in the family line, so K is H's nephew.
Answer: Four
From the clues, S is male because he is the maternal uncle of E. J is male as he is the father-in-law and grandfather. A is also male because J is A's father-in-law, and E's father is male as well. Thus, the total number of male members is four.
Answer: Brother-in-law
From A ^ F, A is married to F. Also, F @ B means F is the brother-in-law of B. Therefore, A's husband F is related to B as brother-in-law. The other symbols are not needed to answer the question.
Answer: Aunt
P is the son of W, and Q is P's sister. X is Q's husband, so Y, being X's sister, is the aunt of Q's family. Since S is P's nephew, Y is related to S as aunt. The key is tracing the sibling link through X.
Answer: V
From the clues, X is the only son of V, and V is not the spouse of P. The remaining relations place J, X, and R within the family structure, while V is the least directly connected in the same relational chain, making V the odd one out.
Answer: Grandfather
A is married to B, so B's father-in-law is A's father. Since G is the grandchild of K and K is linked through the family tree, X corresponds to the grandfather relation for G. Therefore, the answer is Grandfather.
Answer: Niece
F is the only sibling of C, and E is the only son-in-law of F, so E is married to F’s child. G is the daughter of E, making G the grandchild of F. Therefore, relative to the son of F, G is the son’s daughter, i.e. niece in the intended family-relation framing.
Answer: P
This is a family-tree arrangement problem involving three generations and three married couples. After placing the relations using the clues, P emerges as the only member whose stated relation is inconsistent with the rest of the family structure, making P the odd one out.
Answer: Cannot be determined
The clues allow more than one valid family arrangement. Since F's sister-in-law is not uniquely identifiable, P's relation to H cannot be fixed uniquely. Therefore, the answer is not determinable from the given information.
Answer: Father-in-law
Since L is the daughter-in-law of P, L must be married to P’s child. M is the father of L, so M belongs to the generation above L. The family structure implies that M is the father-in-law of G as per the given relations.
Answer: Husband
From the clues, M is the mother of K, and R is the spouse of A's child, so R is the other parent in K's immediate family. Since K is not the daughter of R, R must be the father. Therefore, R is M's husband.
Answer: Data in Statement I alone or in Statement II alone are sufficient to answer the question.
Given: K is daughter of M. M is husband of J. Statement I: V is only daughter of K. Chain: V→K(mother)→M(grandfather)→J(grandmother). J is grandmother of V. Sufficient ✓. Statement II: V is sister of M. M is husband of J. J is sister-in-law (bhabhi) of V. Sufficient ✓. Either statement alone suffices.
Answer: T
The clues indicate a three-generation family with two couples, and K is female because she is described as the only niece. T is the daughter-in-law of K's grandparent, which places T in the middle generation as K's mother. Hence, the mother of K is T.
Answer: Aunt
From the statements, F is female and parent of T and R; R is married to V, and V is parent of B. Also, F is parent of Q and D, and D is the only niece of T, which helps fix Q's gender and relation chain. This leads to Q being the aunt of B.
Answer: Four
Since M is the grandmother and S is her husband, M is female and S is male. P is the only daughter of S, so P is female; A is the only niece of B, which helps identify another female member. With the remaining relations, the family has four male members.
Q35. Given: P H(+) -- L(-) == G(+) K(-) == T(+). What is the relationship between P and T?
Answer: P is mother of T
The symbols indicate family relations and the signs indicate gender. Tracing the chain from T back to P shows that P is in the maternal line. Hence, P is the mother of T.
Answer: Six
From the clues, U and P are male, Q is female, S is female, W and X are male, Y is male, V is male, and R is female. That gives six males in total: U, P, W, X, Y, and V.
Answer: Grand-daughter
From the clues, S is one generation above A, and A is the mother of O. Since S has two children and the family has equal males and females, O is in the grandchild generation of S. The gender of O is female, so O is S's grand-daughter.
Answer: None of these
The statement directly says that M is the grandmother of X. None of the given options is M. Therefore, the correct choice is 'None of these'.
Answer: Son-in-law
From the clues, Ragini is the grandmother of Shyam, so she belongs to the older generation. Piyush is Aditi’s father, and Himanshu is the brother-in-law of Aditi, which places Himanshu as Aditi’s husband’s brother or sibling-in-law; the family structure makes Himanshu the son-in-law of Ragini.
Answer: Mother
T and I are siblings, and M is the maternal grandmother of T, so M is the mother of T's mother. Since L is the only daughter of K and K is the father of two children, L fits as T's mother in the family structure. Therefore, L is related to T as mother.
Answer: Statements I and II together are sufficient.
Statement I only tells us B is A’s husband, which is not enough. Statement II says C is the daughter of B; combined with Statement I, this implies A is also C’s mother. Therefore, I and II together are sufficient.
Answer: Grand-son
K is the father of J, and V is the spouse of J. R is the son of V, so R is the child of J and V. Therefore, R is K’s grandson. The family structure fits three generations with two married couples.
Q43. Given: B(-) - T(+) - H(+) - D, A(+) P(+)= =(-). What is the relationship between B and D?
Answer: Sister
The symbol pattern indicates the family relationship chain and the gender of the persons involved. From the given coding, B is identified as the sister of D. Therefore, the correct relationship is Sister.
Answer: Uncle
From the expression, W is the husband of U, Q is the sister of M, and N is the brother of U. Since U is married to W and Q is in W's family line, N becomes the maternal uncle of Q. Hence, N is Q's uncle.
Answer: Grandmother
G is the oldest person and a male member. Since G and D are a married couple, D is the spouse of the oldest male. The age and relation clues indicate D is the grandmother of A.
Answer: M
Since K is the mother of R, R is K's child. The passage also says K is married to M, so M is the other parent and therefore the father of R. This makes M the correct answer.
Answer: Daughter
K is the mother of M, and K is married to G. Therefore, G is the parent of M. Since the answer option specifies gender, and M is identified as female in the arrangement, M is G’s daughter.
Answer: Sister-in-law
G is the mother of A, and the only son of G is A. So L is married to A, making L A’s wife. Since K is L’s unmarried sibling, K is A’s sibling-in-law. Also, B being the nephew of K fits if K is A’s sister. Therefore, K is A’s sister-in-law.
Answer: 67 years
The clues establish a multi-generation family structure with one older male relative fitting the uncle role. Matching the age set with the prime-number condition and the relationship constraints leads to 67 years as the uncle’s age.
Answer: R
The clues determine the state groups, and the relation is defined by the same pattern used in the examples N to G and Q to P. Applying that pattern to E leads to R. Therefore, R is related to E.