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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 $\phi(191)$?

 Jul 3, 2024

Best Answer 

 #2
avatar+129733 
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191 is prime

 

phi (191)  = 191 - 1  =  190 

 

cool cool cool

 Jul 3, 2024
 #1
avatar+867 
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phi(191) = 188.

 Jul 3, 2024
 #2
avatar+129733 
0
Best Answer

191 is prime

 

phi (191)  = 191 - 1  =  190 

 

cool cool cool

CPhill Jul 3, 2024

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