Question

The first 3 common multiple of 15 and 18 are

Answer 1

Step-by-step explanation:

The multiples of 18 are …, 72, 90, 108, … The common multiples of 15 and 18 are n x 90, intersecting the two sets above, n ≠ 0 ∈ Z n\neq 0 \thinspace\in\thinspace\mathbb{Z} n=0∈Z. In the intersection multiples of 15 ∩ multiples of 18 the least positive element is 90.