P, Q और R का भाई है । S, R की माता है । T, P का पिता है । निम्नलिखित में से कितने कथन निश्चित रूप से सत्य हैं ?
- I.S और T दंपति हैं ।
- II.Q, T का पुत्र है ।
- III.T, Q का पिता है ।
- IV.S, P की माता है ।
- V.R, T की पुत्री है ।
- VI.P, S का पुत्र है ।
नीचे दिए गए कूट का प्रयोग कर सही उत्तर चुनिए :
Read this question in English
P is the brother of Q and R. S is R’s mother. T is P’s father. How many of the following statements are definitely true?
I. S and T are a couple.
II. Q is T’s son.
III. T is Q’s father.
IV. S is P’s mother.
V. R is T’s daughter.
VI. P is S’s son.
Select the correct answer using the code given below:
(a) Only two · (b) Only three · (c) Only four · (d) Only five
उत्तर और व्याख्या · explanation in English
Answer: (c) केवल चार
As siblings, P, Q and R share S as mother and T as father, so S and T are a couple. Only P's gender is known, so the statements that need Q to be male or R to be female are not definite; the other four are.
- P, Q and R are siblings, so R's mother S and P's father T are the parents of all three — and a couple.
- P is male (a brother). The genders of Q and R are not given.
- Definitely true: I (S and T are a couple), III (T is Q's father), IV (S is P's mother), VI (P is S's son).
- Not definite: II (Q may be a daughter) and V (R may be a son).
- So four statements are definitely true.
- ✓ I S is the mother and T the father of the same siblings, so they are a couple.
- ✗ II Q's gender is not given; Q could be T's daughter.
- ✓ III T is P's father and Q is P's sibling, so T is Q's father.
- ✓ IV S is R's mother and R is P's sibling, so S is P's mother.
- ✗ V R's gender is not given; R could be T's son.
- ✓ VI P is male and S is his mother, so P is S's son.
Remember · Note every gender actually given; a statement that needs an unknown gender is never 'definitely true'.
Question and answer: UPSC's official GS Paper II (2025, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·