.Is ?

Since , we can do:

*** Arithmetic modulo :

*** Arithmetic modulo :

*** Arithmetic modulo : .

Well, now use the Chinese Remainder Theorem to find an element .

I found , as you can easily check with any calculator.

Tonio

In the question we were given maple commands to use so I assume we were meant to do it that way. Is there a way to solve this without a calculator?

I had to use one but just did it like...

,

so mod 561

and mod 561...

Then which is not equal to 1 mod 561..