Question

The LCM of 810 and 420 is _
a. 1134 b. 11340 c. 1131 d. none of above​

Answer 1

Answer:

11,340

Step-by-step explanation:

To get the Least Common Multiple (LCM) of 810 and 420 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

810:    2   3 3 3 3 5  

420:    2 2 3       5 7

LCM:    2 2 3 3 3 3 5 7

The Least Common Multiple (LCM) is:   2 x 2 x 3 x 3 x 3 x 3 x 5 x 7 = 11340

Answer 2

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$\implies\sf$Answer:

11,340

Step-by-step explanation:

To get the Least Common Multiple (LCM) of 810 and 420 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

810:    2   3 3 3 3 5  

420:    2 2 3       5 7

LCM:    2 2 3 3 3 3 5 7

The Least Common Multiple (LCM) is:   2 x 2 x 3 x 3 x 3 x 3 x 5 x 7 = 11340

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