Teaching JKPSC Lecturership Mock Test Series 2024-25 Mathematical Science Algebra Divisibility In Z & Euler Function
Consider the Euler's totient function, denoted as ϕ(n), which gives the count of positive integers less than or equal to n that are relatively prime to n.
Let ϕ(n) be the Euler's totient function for a positive integer n.
Which of the following statements about ϕ(n) is correct?
1
ϕ(10) = 4
2
ϕ(15) = 9
3
ϕ(12) = 6
4
ϕ(25) = 20