Find the mean for the following data. {:(Marks obtained,10-20,20-30,30-40,40-50,50-60,60-70),(Nu...

Find the mean for the following data. {:(Marks obtained,10-20,20-30,30-40,40-50,50-60,60-70),(Number of students,8,6,12,5,2,7):}
Class: 11
Subject: MATHS
Chapter: SAMPLE QUESTION PAPER 5
Board:ICSE

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