What is the formula to find the LCM of three numbers?

Answer 1

Assume a, b and c are integers.

The formula of the LCM of three numbers is:

p1max(a,b,c)p2max(a,b,c)......prmax(a,b,c), where each pi to the max() tells you the maximum exponent of the prime of one of the terms. For instance:

Find the LCM of 2, 3 and 4.

2 = 2

3 = 3

4 = 2²

Then, the prime 2 with the max exponent is 2, so select 2².

The prime 3 with the max exponent is 1, so select 3.

Multiply these values altogether to obtain 2² x 3 = 12.

Answer 2

The LCM of any three distinct prime numbers is their product.

Answer 3

3

2 x 3

3 x 5

2 x 3 x 5 = 30, the LCM

Answer 4

It will be their product.
Yes, by multiplying them together.

Answer 5

Their product.

Answer 6

It is 30