What is the least common multiple of 12 and 19?
1 Answer
Sep 24, 2016
This is quite a nice question, with an interesting concept....
19 is a prime factor which means it only has factors of 1 and 19.
While 12 is a composite number, it has no common factor with 19. (apart from 1).
Therefore the lowest common multiple will be the product of the numbers.
This can further be shown by finding the prime factors:
The LCM must have all of the factors of 12 as well as all of the factors of 19.