तालिका—P: हिंदी 67, गणित 72; Q: हिंदी 71, गणित 75; R: हिंदी 75, गणित 78; S: हिंदी 79, गणित 81. R के दोनों विषयों के अंकों का अंतर कितने हैं?
Correct Answer: B. 3
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Correct answer: B. 3