Hi guys, pls help with this question.
The function f is defined for all positive integers n by the following rule: f(n) is the number of positive integers each of which is less than n and has no positive factor in common with n other than 1. If p is any prime number then f(p)=
a. p-1
b. p-2
c. (p+1)/2
d. (p-1)/2
e. 2
Have no idea how to approach this question.
The function f is defined for all positive integers n by the following rule: f(n) is the number of positive integers each of which is less than n and has no positive factor in common with n other than 1. If p is any prime number then f(p)=
a. p-1
b. p-2
c. (p+1)/2
d. (p-1)/2
e. 2
Have no idea how to approach this question.
