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UPSC Civil ServicesPrelims2024General Studies Paper II (CSAT)
Question
QQ39. Let p, q, r and s be distinct positive integers. Let p, q be odd and r, s be even. Consider the following statements : 1. (p − r)^2 (qs) is even. 2. (q − s)q^2 s is even. 3. (q + r)^2 (p + s) is odd. Which of the statements given above are correct?
Options
- A 1 and 2 only
- B 2 and 3 only
- C 1 and 3 only
- D 1, 2 and 3
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Correct Answer
D 1, 2 and 3
Model Answer
Answer: option D, as per UPSC's final answer key (Series A).