Posted by **Anonymous** on Wednesday, October 30, 2013 at 4:43pm.

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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**Anonymous**, Wednesday, October 30, 2013 at 4:44pm
The x isn't supposed to be there.

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**Ms. Sue**, Wednesday, October 30, 2013 at 4:45pm
Only one of those sets would not work. Which one wouldn't work?

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**Anonymous**, Wednesday, October 30, 2013 at 4:51pm
Um I don't really know.

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**Ms. Sue**, Wednesday, October 30, 2013 at 4:55pm
Here are the factors of 12:

1, 2, 3, 4, 6, 12

Factors of 9

1, 3, 9

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**Anonymous**, Wednesday, October 30, 2013 at 4:57pm
I got the 9x9 but whats the 12x12?

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**Ms. Sue**, Wednesday, October 30, 2013 at 5:04pm
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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