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UPSC Civil ServicesPrelims2025General Studies Paper II (CSAT)
Question
QQ6. Three prime numbers p, q and r, each less than 20, are such that p - q = q - r. How many distinct possible values can we get for (p + q + r) ?
Options
- A 4
- B 5
- C 6
- D More than 6
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Correct Answer
D More than 6
Model Answer
Answer: option D, as per UPSC's final answer key (Series A).