Question 169224: I need to find a counterexample to the statement 4^n+1 is divisible by 5. Can someone please show me how to do this.
Thanks Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website! I need to find a counterexample to the statement
is divisible by . Can someone please show me how to do this.
Start with .
No. that's not it, because is divisible by .
So try
There your counterexample. is not divisible by .
Edwin