63. Consider Euler's Φ function given by
Φ(n) = n πp|n(1-(1/p))
Where p runs over all the primes dividing n. What is the value of Φ(45)?
Φ(n) = n πp|n(1-(1/p))
Where p runs over all the primes dividing n. What is the value of Φ(45)?
ANS. D
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