mean marks obtained by a student in his five subjects are 15.In English he secured 8, in Economics 12, in Mathematics 18, and in Commerce 9.Find out the marks he secured in Statistics
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mean of 5 subject marks = 15
sum of 5 subjects marks will be = 15×5 =75
marks of statistics will be 75 - 47 = 28
sum of 5 subjects marks will be = 15×5 =75
marks of statistics will be 75 - 47 = 28
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