Problem
COM-B1-M11-P004 A \(5\times5\) Board
#4
★☆☆☆☆ Level 1 of 5
Can a \(5\times5\) board be tiled by dominoes?
Compare the board area and domino area.
The board area is \(25\), while a domino covers \(2\) cells. The total area covered by dominoes is even, so \(25\) cells cannot be tiled.
In mixed problems, area sometimes suffices.