तालिका—P: हिंदी 73, गणित 78; Q: हिंदी 77, गणित 81; R: हिंदी 81, गणित 84; S: हिंदी 85, गणित 87. R के दोनों विषयों के अंकों का अंतर कितने हैं?
Correct Answer: B. 3
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Correct answer: B. 3