Question

find the LCM 4,12,20​

Answer 1

Answer:

Lcm of 4,12 and 20 is 60

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Answer 2

Answer:

The lcm of 4, 12, and 20​​ is 60.

Step-by-step explanation:

Given: The numbers are 4, 12, and 20​​.

We have to find the lcm of the above numbers.

• As we know, LCM denotes the least common factor or multiple of any two or more given integers.  

We are solving in the following way:

We have,

The numbers are 4, 12, and 20​​.

First, we will find all prime factors for each number.

Prime Factorization of 4 is:

$2 \times 2 => 2^2$

Prime Factorization of 12 is:

$2 \times 2 \times 3 => 2^2 \times 3^1$

Prime Factorization of 20 is:

$2 \times 2 \times 5 => 2^2 \times 5^1$

For each prime factor, we will find where it occurs most often as a factor and write it that many times in a new list.

The new superset list is

2, 2, 3, 5

Multiplying these factors together to find the LCM.

$LCM = 2 \times 2 \times 3 \times 5 = 60$

Therefore,

LCM(4, 12, 20) = 60