Math

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Which tiles can be used to cover a 12 by 12 floor? 9 by 9? Suppose you have 2 by 2, 3 by 3, 4 by 4, and 5x by 5 ft tiles.

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    The x isn't supposed to be there.

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    Only one of those sets would not work. Which one wouldn't work?

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    Um I don't really know.

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    Here are the factors of 12:

    1, 2, 3, 4, 6, 12

    Factors of 9

    1, 3, 9

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    I got the 9x9 but whats the 12x12?

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    Look at the factors of 12. All but one size of floor tile will cover a 12 by 12 foot floor.

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    :L

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