in a group of 10 students, there are 4 boys and 6 girls . the mean height of the boys is 1.5 m and the mean height of girls is 1.4 m. find the mean height of 10 students
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height of 4 boys is 6 m and that of 6 girls is 8.4 m.Total 14.4 m and after dividing it by 10 ,mean height is 1.44 m
mercy2:
i think u have not read the question properly
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