True, 15 is the least common multiple.
Work Step by Step
The Least Common Multiple is the smallest number that is a multiple of all of the numbers listed. Remember, multiples of a number are all of the numbers that the number can be multiplied by a whole number to get. For instance, the multiples of 12 are 12, 24, 36… Thus, the Least Common Multiple of 5 and 15 is 15.