RRB Group D 16 Sep 2022 Shift 3 Solved Paper

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Question : 95 of 100
 
Marks: +1, -0
Study the given table and answer the question that follows.
The marks obtained in Mathematics by 41 students of Class X are given in the table.
Number of Marks 10-20 20-30 30-40 40-50 50-60
Number of students 8 7 6 11 9

What is the arithmetic mean of the marks obtained by these students? [Give your answer correct to 3 decimal places.]
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