What is the LCM of 20 16 12?

Answer 1

To find the LCm of 12, 16 and 20 you first need to break these numbers into their prime factors:

12 = 2x2x3

16 = 2x2x2x2

20 = 2x2x5

The next step is to identify any common factors. In this case, all three numbers have two 2s as prime factors, so we can discard 4 of them. Take every other prime factor (2, 2, 2, 2, 3 and 5) and multiply them together to find the LCM:

2x2x2x2x3x5 = 240

Thus the LCM of 12, 16 and 20 is 240.

Answer 2

The Least Common Multiple (LCM) of 20, 16, and 12 is 240.
LCM, in this case, would presumably refer to the Least Common Multiple.

The easiest way to break down these numbers would be with prime numbers.

12=2x2x3

16=2x2x2x2

20=2x2x5

From here, we then multiply the greatest number of times these numbers appear. 12 has one 3. 16 has four 2. 20 has one 5. 2x2x2x2x3x5=240.

Thus, we find that the LCM for 12, 16 and 20 is 240.