the height of 7 building is 12 m, 13 m, 14 m, 15 m, 16 m, 17 m and 18 m. find the average height of the building.
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the average height of the building is given by = (12+ 13 + 14 + 15 + 16 + 17 + 18 ) ÷ 7
= (105÷7)
=15.
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