The average height of 25 students is 150cm what is the total heght of all student
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Mean height =sum of heights of students/
number of students
150 cm=sum of heights of students/25
150×25=sum of heights of students
375=sum of heights of students
number of students
150 cm=sum of heights of students/25
150×25=sum of heights of students
375=sum of heights of students
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