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A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased.....

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A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half (1/2). What is the number of pupils in the class?

posted Jun 23, 2016 by Brijesh Talwar

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