The mean of marks secured by 50 students in division A of class X is 6 – McqOptions

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1.	The mean of marks secured by 50 students in division A of class X is 61, 25 students of division B is 57 and that of 50 students of division C is 55. WhatÂ will be the mean of marks of the students of three divisions of Class X?
A.	57.1
B.	56.4
C.	59.2
D.	57.8
Answer» E.

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