One tiles a floor of a×b dm2 with square tiles, a,b∈N. Tiles do not overlap, and sides of floor and tiles are parallel. Using tiles of 2×2 dm2 leaves the same amount of floor uncovered as using tiles of 4×4 dm2. Using 3×3 dm2 tiles leaves 29 dm2 floor uncovered. Determine a and b. combinatoricscombinatorial geometrytilesTiling