MathDB
square tiles on a x b floor

Source: Netherlands - Dutch NMO 1978 p2

January 28, 2023
combinatoricscombinatorial geometrytilesTiling

Problem Statement

One tiles a floor of a×ba \times b dm2^2 with square tiles, a,bNa,b \in N. Tiles do not overlap, and sides of floor and tiles are parallel. Using tiles of 2×22\times 2 dm2^2 leaves the same amount of floor uncovered as using tiles of 4×44\times 4 dm2^2. Using 3×33\times 3 dm2^2 tiles leaves 2929 dm2^2 floor uncovered. Determine aa and bb.