I dont understand that how did they come to following conclusion whats the thing that i need to know
Asked
Active
Viewed 36 times
0
-
2It's supposed to be $\phi(5)$, not $\phi(n)$. – Arthur May 03 '20 at 16:45
-
1Do you know Euler's totient theorem? – saulspatz May 03 '20 at 16:54