Answer:
Step-by-step explanation:
9 = 9 , 18 , 27 , 36 , 45 , 54 , 63 , 72, 81 , 90 , 99 , 108....
12 = 12 , 24 , 36 , 48 , 60, 72 , 84 , 96 , 108, ......
18 = 18 , 36 , 54 , 72 , 90 , 108 .....
First three common multiples of 9, 12 and 18 : 36 , 72 , 108
