Problem 22E

Show that n is prime if and only if ?(n) = n - 1.

Step-by-Step Solution:

Solution In this problem we have to prove that n is prime if and only Step 1 Let's assume n is prime so every integer less than n is relatively prime to n , so

Step 2 of 3

###### Chapter 4.3, Problem 22E is Solved

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Step 3 of 3