The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find
the mean of marks of the students of three divisions of Class X.
The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find
the mean of marks of the students of three divisions of Class X.
1). 52.1
2). 51.4
3). 52.8
4). 54.2
SSC CGL Books
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