Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Computer Networks Network Security Cryptography
Consider Euler's Φ function given by Φ(n) = nπp|n(1 - (1/p))
where p runs over all the primes dividing n. What is the value of Φ(45)?1
3
2
12
3
6
4
24