Answer:
We know that 120 can be factored as 2^3 * 3 * 5, so its totient function value can be found as follows:
φ(120) = φ(2^3) * φ(3) * φ(5)
= 2^2 * 2 * 4
= 16
Therefore, there are 16 numbers less than or equal to 120 that are relatively prime to 120