The mean of marks secured by 45 students in division A of class X is 6 – McqOptions

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1.	The mean of marks secured by 45 students in division A of class X is 69, 65 students of division B is 65 and that of 50 students of division C is 63. FindÂ the mean of marks of the students of three divisions of Class X.
A.	65.5
B.	64.8
C.	64.1
D.	66.9
Answer» B. 64.8

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