All the multiples of 18 and 30
18: 1,2,3,6,9,18
30: 1,2,3,5,6,10,30
The first three common ones are: 1,2 and, 3
One solution let's find that




Answer:
6
Step-by-step explanation:
7 x 6 = 42 + 9 = 51 + 54 = 105 + 75= 180
Answer:
b
Step-by-step explanation:
1 mm
Km etc
Hm etc
Dam etc
M 0.001
Dm 0.01
Cm 0.1
MM 1