MathDB
Tromino tiling

Source: 2013 BAMO-8 #3

February 27, 2016
geometry

Problem Statement

Define a size-nn tromino to be the shape you get when you remove one quadrant from a 2n×2n2n \times 2n square. In the figure below, a size-11 tromino is on the left and a size-22 tromino is on the right. http://i.imgur.com/2065v7Y.png We say that a shape can be tiled with size-11 trominos if we can cover the entire area of the shape—and no excess area—with non-overlapping size-11 trominos. For example, a 2323 rectangle can be tiled with size-11 trominos as shown below, but a 3333 square cannot be tiled with size-11 trominos. http://i.imgur.com/UBPeeRw.png
a) Can a size-55 tromino be tiled by size-11 trominos?
b) Can a size-20132013 tromino be tiled by size-11 trominos? Justify your answers.