QuestionFind the highest common factor of the numbers 45, 120, and 180.

Studdy Solution
Calculate the HCF by multiplying the lowest power of all common prime factors.
- The lowest power of $3$ is $3^1$. - The lowest power of $5$ is $5^1$.
Thus, the HCF is $3^1 \times 5^1 = 15$.
The highest common factor of 45, 120, and 180 is:
$\boxed{15}$