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The average mark of 13 papers is 40. The average mark of the first 7 papers is 42 and that of the last seven papers is 35. Then the marks obtained in the 7th paper is |
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Answer» The average mark of 13 papers is 40. The average mark of the first 7 papers is 42 and that of the last seven papers is 35. Then the marks obtained in the 7th paper is |
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