The mean of marks secured by 30 students in division-A of class X is 6 – McqOptions

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1.	The mean of marks secured by 30 students in division-A of class X is 67, 55 students of division-B is 63 and that of 40 students of division-C is 61. What isÂ the mean of marks of the students of three divisions of Class X?
A.	63.32
B.	62.62
C.	61.92
D.	64.72
Answer» B. 62.62

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