Q. 114.5( 54 Votes )

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?

Answer :

(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.


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