Question: Write this program in Scala Implement Euler's phi function: phi(n) = # of integers k such that 0 < k

Write this program in Scala

Implement Euler's phi function:

phi(n) = # of integers k such that 0 < k <= n and gcd(n, k) = 1

For example:

phi(9) = 6 phi(10) = 4

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