निम्नलिखित पर विचार कीजिए :
A + B का अर्थ है कि A, B का पुत्र है।
A − B का अर्थ है कि A, B की पत्नी है।
व्यंजक P + R − Q का अर्थ क्या है?
Read this question in English
Consider the following:
A + B means A is the son of B.
A − B means A is the wife of B.
What does the expression P + R − Q mean?
(a) Q is the son of P. · (b) Q is the wife of P. · (c) Q is the father of P. · (d) None of the above
उत्तर और व्याख्या · explanation in English
Answer: (c) Q, P का पिता है।
P + R means P is the son of R, and R − Q means R is the wife of Q. So Q is the husband of P's mother R, which makes Q the father of P.
- P + R → P is the son of R.
- R − Q → R is the wife of Q, so Q is R's husband.
- P is the son of R, and R's husband is Q, so Q is the father of P.
Remember · Decode coded relations one link at a time, left to right, noting each person's gender as you go.
Question and answer: UPSC's official GS Paper II (2017, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·