Question 4
A domino consists of two unit squares joined edge to edge, each with a number on it. Fifteen dominoes numbered 11, 12, 13, 14, 15, 22, 23, 24, 25, 33, 34, 35, 44, 45 and 55 have been assembled into the 6 by 5 rectangle below. The individual domino boundaries have been erased. Reconstruct the dominoes by drawing the boundary lines.
