Question

Find the LCM of the following by prime factorization method.
(a) 24,60. (b) 10,12,18. (c) 12,48,60. (d) 18,20,30. (e) 9,15,18,20
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Answer 1

Answer:

I think this is right answer

Step-by-step explanation:

e)

Answer 2

Answer:

(a) LCM of 24 and 60 is 2 x 2 x 2 x 3 x 5 = 120.

(b)10 = 2 x 5  

   12 = 22 x 3  

   18 = 2 x 32

LCM = 22 x 32 x 5

=180

(c) 12 x 4 x 5 = 240

LCM(12, 48, 60) = 240

The least common multiple for three numbers 12, 48 and 60 is 240

(d)2 x 3 x 5 x 3 x 2 = 180

LCM(18, 20, 30) = 180

The least common multiple for three numbers 18, 20 and 30 is 180

(e)The LCM of 9,15,18 9 , 15 , 18 is 2x3x3x5=90

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