If ϕ(n) is Euler's phi function then which of the following options is correct?
1
ϕ(n) is odd n > 2
2
ϕ(n) is even for all n
3
ϕ(n) is even n > 2
4
ϕ(n) is odd for all n
5
Question Not Attempted
If ϕ(n) is Euler's phi function then which of the following options is correct?