What is the LCM of 2 and 4?

What's the Least Common Multiple (LCM) of 2 and 4?

Answer

LCM of 2 and 4 is

4

First common multiples: 4, 8, 12, …

As a common denominator: multiply the top and bottom of x/2 by 2.

2 divides 4 (4 ÷ 2 = 2), so the LCM is the larger number itself.

2 — prime

4 = 2²

Prime	2	4	Highest power
2	2	2²	2²

LCM = 2² = 4

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