L.C.M. of 8, 10, 12 = 2 x 2 x 2 x 3 x 5 = 120
The largest three digit number = 999
Therefore, the required number = 999 – 39 = 960
Complete the drawing shown in Fig. 9.14 to indicate where the free ends of the two wires should be joined to make the bulb glow