GATE CS 2025 Set 1 — Question 4
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.MCQ+1 / -0.33EasyNumerical Relations & ReasoningAnalytical AptitudeGeneral AptitudeDeduction & Induction
General Aptitude → Analytical Aptitude → Deduction & Induction
Last updated
Question
Consider the relationships among , , , , and :
(1) is the grandmother of .
(2) is the uncle of and .
(3) has only one son.
(4) has only one daughter.Which one of the following options is correct?
- is the brother of .
- is the daughter of .
- is the sister of .
- is the mother of .
(1) is the grandmother of .
(2) is the uncle of and .
(3) has only one son.
(4) has only one daughter.Which one of the following options is correct?
Correct answer
(A) Both (1) and (2) are true.
Solution
Let's map the relationships:
(1) is the mother of , and is the daughter of . Thus, is the grandmother of . True.
(2) is the brother of , and are the children of . Thus, is the uncle of and . True.
(3) is a son of . The gender of is unknown. If is male, has two sons. If is female, has one son. We cannot conclude has only one son. False.
(4) and are both daughters of . Therefore, has at least two daughters. False.Statements (1) and (2) are true.
- (Male) is the brother of .
- (Female) is the mother of , which means is also the mother of .
- (Female) is the daughter of .
- (Female) is the sister of , so is also a daughter of .
(1) is the mother of , and is the daughter of . Thus, is the grandmother of . True.
(2) is the brother of , and are the children of . Thus, is the uncle of and . True.
(3) is a son of . The gender of is unknown. If is male, has two sons. If is female, has one son. We cannot conclude has only one son. False.
(4) and are both daughters of . Therefore, has at least two daughters. False.Statements (1) and (2) are true.
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE CS question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Analytical Aptitude
2026 Set 1 Q1The antonym of the word protagonist is ________.2026 Set 2 Q1Expedite, Hasten, Hurry, __________ Fill the blank by choosing a word with a meaning similar to…2026 Set 2 Q2A black square PQRS has been cut into two parts. One part of it is shown in Panel I. Which one of…2026 Set 1 Q2The figure shows two 4-tile patterns. [figure] Either one or both of the patterns can be used any…2026 Set 1 Q3Consider a knock-out women’s badminton singles tournament where there are no ties. The loser in…