Question

find LCM of 2800,1680,1200 by prime factorisation method​

Answer 1

Answer:

The LCM is 8400.

Step-by-step explanation:

Find and list multiples of each number until the first common multiple is found. This is the lowest common multiple.

Multiples of 1200:

1200, 2400, 3600, 4800, 6000, 7200, 8400, 9600, 10800

Multiples of 1680:

1680, 3360, 5040, 6720, 8400, 10080, 11760

Multiples of 2800:

2800, 5600, 8400, 11200, 14000

Therefore,

LCM(1200, 1680, 2800) = 8400

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Answer 2

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