The function f is defined for all positive integers n by the following rule:
f(n) is the no 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 a prime no then f(p) =
A) p-1
B) p-2
C) (p+1)/2
D) (p-1)/2
E) 2
Can someone give a detailed insight ??? Thank you
f(n) is the no 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 a prime no then f(p) =
A) p-1
B) p-2
C) (p+1)/2
D) (p-1)/2
E) 2
Can someone give a detailed insight ??? Thank you
