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UPSC Civil ServicesPrelims2025General Studies Paper II (CSAT)
Question
QQ40. If N^2 = 12345678987654321, then how many digits does the number N have ?
Options
- A 8
- B 9
- C 10
- D 11
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Correct Answer
B 9
Model Answer
Answer: option B, as per UPSC's final answer key (Series A).