A patio was to be laid in a design with one tile in the first row,two tiles in the second row,three tiles in the third row, and so on. Mr Tong had 60 tiles to use. How tiles should be placed in the bottom row to use the most tiles?

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  1. 10 tiles?

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  2. 12

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  3. 10 tiles.

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  4. it is twelve because 60 divided by 5 is twelve so each row would have 1-5 tiles in it

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