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Tips and Tricks for Blood Relations | Logical Reasoning (LR) and Data Interpretation (DI) - CAT PDF Download

Candidates can discover various tips and strategies below to efficiently solve questions in the Blood Relation reasoning section.

  • Tip #1: When tackling questions in the Blood Relation reasoning section, candidates should treat "ME" as the introducing person to quickly answer posed questions.
  • Tip #2: In the Coded Relation type blood relation section, candidates should carefully examine all options, including gender considerations. By eliminating incorrect options, candidates can arrive at the final conclusion.
  • Tip #3: Avoid making predictions about a person's gender based on their name unless explicitly mentioned, as this may lead to an inaccurate answer.
  • Tip #4: It's crucial to recognize that being the "only son" or "only daughter" does not necessarily imply being the only child. If a blood relation question states that A is the only son of B, A could potentially have both a son and a daughter or just one son.
  • Tip #5: Identify the two individuals between whom the relationship needs to be determined. Then, using the relationships between other family members provided as intermediaries, attempt to establish the connection between the two required persons.
  • Tip #6: Relating the given relations in questions to personal relationships will enhance understanding and aid in answering questions more effectively.
  • Tip #7: Utilizing pictorial representation is advisable for solving questions. This form allows candidates to systematically arrange data, making it easier to comprehend the relationships presented in the questions.

Solved Example:

Q1: Introducing a lady at the party, Goldy told her friend, “She is sister-in-law of my only brother who is father of Ganesh who is grandson of Navya’s husband who is my father who has only two child.” How is Ganesh related to that lady? 
Sol: If we analyse all the statements given above in the question and draw the family tree for the same, then we get the answer nephew. Hence, Ganesh is the nephew of that lady. 

Q2: Given Directions
M@N means M is the wife of N
M#N means M is the son of N
M5N means M is the sister of N
M$N means M is the father of N

Which of the following expressions shows I as the brother of H?
(a) H#P$I,
(b) H%P$I,
(c) I%H$P,
(d) H%I$P

Ans: (d)
Sol:

The above statements implies the following things.
M is
Tips and Tricks for Blood Relations | Logical Reasoning (LR) and Data Interpretation (DI) - CAT

From the above options, we need to find an expression which represents I as the brother of H.
So, check all the options and eliminate those in which either the gender is of I is unknown, or I is female.
In the above question, @ and % represents wife and sister respectively such as female so eliminate all such options. And if in any expression, I is present in the end then it means that the gender of I will be unknown so eliminate such options too.
From the above trick we can eliminate options 1,2, and 3. Hence in the expression “H%I$P”, I is the brother of H. 

The document Tips and Tricks for Blood Relations | Logical Reasoning (LR) and Data Interpretation (DI) - CAT is a part of the CAT Course Logical Reasoning (LR) and Data Interpretation (DI).
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