Blood Relations MCQ Quiz - Objective Question with Answer for Blood Relations - Download Free PDF

1) A is the brother of B and son of C and D.

Implies, C and D are the parents of A and B.

2) E is B's husband and F's father.

Implies, B is the sister of A. Also, F is the child of B and E.

(1) B is the only daughter of C and D → It is clear from the above family tree diagram that B is the only daughter of C and D.

(2) D is the maternal grandfather of F → Implies, D is the husband of C and it further implies that C is the mother of A.

(3) F is the only grandson of C → Implies, F is a male.

(4) A is the son of C → It is clear from the above family tree diagram that A is the son of C.

Hence, C is the mother of A, and the data in "option (2)" is sufficient to answer the question.

The table below contains symbols used to denote the relationship between any two individuals.

The following information is given in statement 1:

• C is the mother of J
• J is the sister of K
• J is the mother of L

Thus, here the gender of K is not clear. 

K could be the brother or sister of J.

Therefore, statement 1 is not sufficient.

The following information is given in statement 2:

• L has no brother
• L is the sister of U.

Using statements 1 and 2:

K can be son or daughter of C (as the gender of K is not known)

Explanation:

Statement I: T is brother of H who is father of B. B is sister of D.

So, according to the final arrangement of statement I, relation between T and P cannot be answered.

Hence, Statement I is not sufficient to answer the question.

Statement II: P mother-in-law of B who is married to G who has son and two daughters.

So, according to the final arrangement of statement II, relation between T and P cannot be answered.

Hence, Statement II is not sufficient to answer the question.

Combining statement I and II: T is brother of H who is father of B. B is sister of D. P mother-in-law of B who is married to G who has son and two daughters.

So, according to the final arrangement of statement I and II, T is P's daughter-in-law's parental uncle.

Hence, Statement I and II is sufficient to answer the question.

Hence, the correct answer is 'Option 4'.

Statement I. Sunny is the only son of his parents. 

Here, no information regarding Sunny's sister(s), therefore statement (I) is not sufficient to answer the question.

Statement II. Sunny’s parents have three children.

Here, Sunny's sibling's can be either brother or sister, therefore statement (II) is not sufficient to answer the question.

Combined statement (I) and (II): Sunny is the only son of his parents. Sunny’s parents have three children. 

Here, Sunny has two sisters.

Thus, Statements I and II together are sufficient to answer the question.

Hence, the correct answer is "Option 3"

According to the question:

I. Rohan's father has three children.

So, Rohan has two siblings who can either brother or sister. Thus, no specific information regarding Rohan's brothers cannot be determined. 

Here, statement I alone is not sufficient to answer the question.

II. Rohan has one sister.

Here, no information regarding Rohan's brothers cannot be determined.

Here, statement II alone is not sufficient to answer the question. 

Combining statement I and II: Rohan's father has three children. Rohan has one sister.

So, Rohan is one brother.

Thus, Both statement I and statement II together are needed.

Hence, "Option 4" is the correct answer.

Important Points

• The question is asking about D's relation with F.
• For this, we must know the gender of D.

Statement I: B has two sisters E and F.

We cannot say how D is related to F using this statement.

Statement II: A is the mother of B, who Is the brother of D.

We cannot say how D is related to F using this statement.

Combining both statements, we get:

We cannot say how D is related to F because we don’t know the gender of D.

Hence, ‘Statement I and II together are not sufficient is the correct answer.

Mistake Points'B has two sisters E and F.' doesn't specify that B has only 2 sisters. Had the word only been given in the sentence, we could have concluded that D.

Option(4) is correct.

From both statements, we are not able to find the gender of Z.

So, Z may be the sister or maybe brother of X.

Hence the correct answer is an option(4), i.e., Both Statement-1 and Statement-2 are not sufficient to answer the question.

Statement I) S has two children and is a daughter-in-law of T.

Statement (I) alone is not sufficient to answer the question.

Statement II) S married to R.

Statement (II) alone is also not sufficient to answer the question.

By combining statement (I) and (II)

Therefore, even by combining Statements (I) and (II), we cannot conclude who is the father of R as the gender of T is not known.

Hence, neither statement I nor statement II is sufficient.

Confusion Points

We cannot decide the gender until it is not defined in the question. Here T can be either the Mother or Father of R, but we cannot be specific regarding either of these roles.

According to given conditions:

1. H is the nephew of D. C is the son of B, who is the husband of E.

The relation between D and B cannot be determined using this data.

2. B is the wife of A, who is the father of D. A has two children.

D is the child of B.

So, only the facts of statement 2 are sufficient to answer the question.

Hence, 'option 4' is the correct answer.

Mistake Points In the Data Sufficiency question, You just have to find the statement which is sufficient for the answer.

So, here Statement II clarifies that D is the Child of B.

1. Z is the daughter of X.

We cannot say how Y is related to T using this statement.

2. Y is the only son of T, who has 2 children. X is the mother of Z. 

We can easily say that Y is the son of T using this statement alone.

Hence, ‘2 alone is sufficient while 1 alone is not sufficient’ is the correct answer.

From the given information,

Using statement 1: 

Therefore, only statement 1 is not sufficient.

Using statement 2: 

Therefore, only statement 2 is not sufficient.

Using statement 3: 

Therefore, only statement 3 is not sufficient.

Now, we have Vishal in statement 1 and Arima in statement 3. So, by combining statement 1 and statement 3, we get:

We can now tell that Vishal is the brother of Arima.

Hence, both statement 1 and 3 are sufficient.

Drawing the diagrams,

Statement (I): Arjun said, “He is the father of my father’s wife’s only daughter-in- law’s daughter”

The man is Arjun.

Statement (II): Arjun said, “He is the husband of my sister’s paternal grandmother’s husband’s one and only daughter-in-law”.

The man is the father to Arjun.

Here, we can see that in both cases we are able to answer the question.

But only one of them can be true. That is either I or II is true.

Hence, data in either statements I alone or II alone are sufficient to answer the question.

The family chart is as follows:

According to given information

P and Q are children of S

The given statements 

1. R is the brother of P and the son of T.

In this statement, the genders of the T and S are not defined. So, this is not a sufficient statement to tell the father of P

2. U is the mother of Q.

In this statement, it is clear that S is the father of P. So, this statement is sufficient to tell the father of P is S.

Hence, "only 2" is the answer.

Statement I: T is the mother of P, who is the sister of Q.

We cannot tell the relation between P and R using this statement.

Statement II: R is the daughter of Q.

We cannot tell the relation between P and R using this statement.

Combining both statements, we get:

So, P is the aunt of R.

Hence, ‘Statement I and II together are sufficient’ is the correct answer.

Additional Information

The question is how P is related to R. So gender of P should be known and gender of Q not required. 

The table below contains symbols used to denote the relationship between any two individuals.

The following information is given in statement 1:

• C is the mother of J
• J is the sister of K
• J is the mother of L

Thus, here the gender of K is not clear. 

K could be the brother or sister of J.

Therefore, statement 1 is not sufficient.

The following information is given in statement 2:

• L has no brother
• L is the sister of U.

Using statements 1 and 2:

K can be son or daughter of C (as the gender of K is not known)