Among the three consecutive numbers, there must be one even number and one multiple of 3. Thus, the product must be multiple of 6.
Example:
(i) 2 x 3 x 4 = 24
(ii) 4 x 5 x 6 = 120
Find first three common multiples of :
1) 6 and 8
2) 12 and 18
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