Math
posted by Anonymous on .
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.

The x isn't supposed to be there.

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

Um I don't really know.

Here are the factors of 12:
1, 2, 3, 4, 6, 12
Factors of 9
1, 3, 9 
I got the 9x9 but whats the 12x12?

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

:L