+2653 For a positive integer $n$, $\phi(n)$ denotes the number of positive integers less than or equal to $n$ that are relatively prime to $n$.
What is $\phi(191)$?
+1926 Let's set up for a really cool function.
First, note that \(191=191*1\)
Now, we use Euler's Totient Function. We have
\(\phi{191} = 191/ ( 191) * (191-1) = 190\)
The answer is 190
Thanks! :)
+1926 Let's set up for a really cool function.
First, note that \(191=191*1\)
Now, we use Euler's Totient Function. We have
\(\phi{191} = 191/ ( 191) * (191-1) = 190\)
The answer is 190
Thanks! :)
