Find the LCM of the following numbers in which one number is the factor of the other:
(a) 5, 20 (b) 6, 18
(c) 12, 48 (d) 9, 45
What do you observe in the results obtained?
(a) 5, 20
LCM = 2 × 2 × 5 = 20
(b) 6, 18
LCM = 2 × 3 × 3 = 18
(c) 12, 48
LCM = 2 × 2 × 2 × 2 × 3 = 48
(d) 9, 45
LCM = 3 × 3 × 5 = 45
Yes, it can be seen that in each case the LCM of the given number is the larger number. When one number is a factor of the other, their LCM will be the larger number.
15