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MCIII Number Theory 4.9 and 4.10

 
 
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Re: MCIII Number Theory 4.9 and 4.10
by Dr. Kevin Wang - Monday, January 8, 2024, 12:33 AM
 

4.9: Use the formula for $\phi(n)$ function.

4.10: Just try the small numbers for $k$.  If you realize that most of the $\phi(n)$ values are even numbers ...