How many positive integers not exceeding 84 are relatively prime to 84?
Note
This is Euler's totient value φ(84). Removing multiples of its prime factors gives φ(84) = 24.
How many positive integers not exceeding 84 are relatively prime to 84?
This is Euler's totient value φ(84). Removing multiples of its prime factors gives φ(84) = 24.