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UPSC Civil ServicesPrelims2024General Studies Paper II (CSAT)
Question
QQ18. 421 and 427, when divided by the same number, leave the same remainder 1. How many numbers can be used as the divisor in order to get the same remainder 1?
Options
- A 1
- B 2
- C 3
- D 4
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Correct Answer
C 3
Model Answer
Answer: option C, as per UPSC's final answer key (Series A).