निम्नलिखित कथनों पर विचार कीजिए :
प्रत्येक लाल, नीला है। प्रत्येक नीला, हरा है। प्रत्येक हरा, पीला है।
P, Q और R द्वारा निरूपित निम्नलिखित में से कौन-से कथन सही हैं?
- P.प्रत्येक नीला, पीला है।
- Q.प्रत्येक लाल, हरा है।
- R.प्रत्येक लाल, पीला है।
नीचे दिए गए कूट का प्रयोग कर उत्तर चुनिए।
Read this question in English
Consider the following statements:
Every red is blue. Every blue is green. Every green is yellow.
Which of the following statements denoted by P, Q and R are correct?
P. Every blue is yellow.
Q. Every red is green.
R. Every red is yellow.
Select the answer using the code given below.
(a) P and Q only · (b) Q and R only · (c) P and R only · (d) P, Q and R
उत्तर और व्याख्या · explanation in English
Answer: (d) P, Q और R
The statements form a chain of sets: red inside blue, blue inside green, green inside yellow. Anything inside a smaller set is inside every larger set, so all three conclusions follow.
- Red ⊂ Blue ⊂ Green ⊂ Yellow.
- P: Blue ⊂ Green ⊂ Yellow — follows.
- Q: Red ⊂ Blue ⊂ Green — follows.
- R: Red ⊂ … ⊂ Yellow — follows.
- ✓ P Every blue is green and every green is yellow.
- ✓ Q Every red is blue and every blue is green.
- ✓ R Following the whole chain, every red is yellow.
Remember · 'Every A is B, every B is C' gives 'every A is C'; draw nested circles to see it at once.
Question and answer: UPSC's provisional GS Paper II (2026, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·