The questions related to blood relation involve various family members and their relations. The questions provide some information related to the different family members and the candidates are required to identify the relationship between those particular members. The blood relations questions might be of different forms which are explained in detail below.
The blood relation questions have several variations to test the understanding and interpretation capabilities of the candidates.
The question types are divided into three categories as:
Though the questions have these aforementioned types, solving the problems and the ultimate aim of the questions always remain unchanged. Whatever the questions are, the candidates are always required to identify the relationship between two particular entities.
The types can further be classified as:
The single person blood relation involves the relationship between two people only. The questions can be either direct or indirect.
In mixed-blood relation, the relation between several members and hierarchy are considered. The different variations of questions are explained below along with an example each.
(a) Direct Conversation Based Questions
In direct conversation-based blood relation questions, a problem statement (in the form of conversation) is given and a particular relation is asked from the conversation. In general, these questions are single person blood relation types, i.e. involving the relationship between two persons only. An example will illustrate this better. The boy in the photograph is the only son of the son of Suresh's mother i.e., the son of Suresh. Hence, Suresh is the father of boy.
Example: Showing a photo of a man, Pinki says,” His mother’s only daughter is my mother”. How is Pinki related to the man in the photo?
Solution: Analysing the sentence, it can be deduced that Pinki’s mother is the sister of the man in the photo. So, the man is the Uncle of Pinki or Pinki is the niece of that man.
The boy in the photograph is the only son of the son of Suresh's mother i.e., the son of Suresh. Hence, Suresh is the father of boy.
(b) Puzzle Based Questions
In this type of questions, the statements are given in the form of puzzles. The relations are mostly of mixed blood relation type and the candidates are required to decode the entire statement and identify the relationship between the given entities. Here is an illustration to explain this well.
Example: In a family of W, X, Y and Z, W and X are brothers; while Y and Z are sisters. How are X and Y related if W’s son is Z’s brother?
Solution: From the statement, a simple diagram can be sketched to analyse the relation between Y and Z.
If D is Male, the answer is Nephew.
If D is Female, the answer is Niece.
As the sex of D is not known, hence, the relation between D and A cannot be determined.
Note: Niece - A daughter of one's brother or sister, or of one's brother-in-law or sister-in-law. Nephew - A son of one's brother or sister, or of one's brother-in-law or sister-in-law.
(c) Symbol Based Questions
Also known as coded blood relation questions, these involve a set of codes. The candidates are required to decode the sentences (or codes) to identify the relation of the given entities.
Example: Consider the following statements and answer the given question.
How is W and Z related from the following statement: W * X + Y / Z?
Solution: This can be solved by dividing the question and solving from left to right. Now a simple diagram can be made by mentioning the gender and their relations as given below:
Thus, it is easily seen that W is the nephew of P.
These were the most important types of blood relation question that are frequently asked in the CAT exam. Solving different variation of the related question is very crucial to be able to increase the confidence, speed and accuracy while solving the actual CAT paper.
Only daughter of my mother → myself.
Hence, the woman is the mother of the man.
Only daughter of my mother → myself.
As the topic is repeated every year in the CAT exam, the candidates are suggested to be thorough with the basics and other related concepts to increase their chances of scoring more in the exam. Here some important tips and strategies are given to help the CAT aspirants ace the blood relation question with ease.
It is suggested to get well versed with the blood relation chart to be able to relate and answer the questions easily. Here is a chart that details the entire family relation.
It should be noted that this approach should only be taken when the question statement is short. For questions with a long sentence, it is suggested to draw the family tree to easily solve the questions.
P is the mother of K P @ Q → P is the wife of Q ...(1) Q $ T → Q is the brother of T ...(2) T # U → T is the daughter of U Hence, → Q is the son of U ...(3) U * W → U is the father of W. From (1) and (3), U is the father-in-law of P.
K is the sister of D
D is the father of J.
Therefore, J is the nephew or niece of K and P is the grandmother of J.
P is the mother of K
P @ Q → P is the wife of Q ...(1)
Q $ T → Q is the brother of T ...(2)
T # U → T is the daughter of U
Hence, → Q is the son of U ...(3)
U * W → U is the father of W.
From (1) and (3), U is the father-in-law of P.