(trick question) ha but i don't think you can arrange 7 tiles in a square, but if you could the answer would be 7
864 tiles.144 tiles per square foot.
150 tiles
Scrabble tiles are 0.75 inch × 0.75 inch square. Therefore, one square foot of Scrabble tiles will include 256 tiles in a square of 16 X 16 tiles.
16 square tiles
22.2 tiles so buy 23 tiles.
One square foot is 12 inches by 12 inches so you can fit in it 9 tiles in a 3 tiles by 3 tiles square.
5,184 2-square-inch tiles are needed.
192 tiles
2500 tiles
76.6 tiles
67 tiles.
256 tiles