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11-01-2017
Mathematics

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An artist is arraging tiles in rows to decorate a wall.Each new row has 2 fewer tiles than the row below it.Ifthe first row has 23 tiles,how many tiles will be in the seventh row?

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11-01-2017

23, 21, 19, 17, 15, 13, 11. So the answer is 11.

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