>I plan to post the answers to these on monday.
>
>
>1) Can the following expression be simplified?
>
>

>(x-a)(x-b)(x-c)...(x-z)
>

Yes. Put 0 instead :)
>
>Only basic algebra is required.
>
>
>In the following problems, each letter represents a digit. Same letter, same digit. Different letters mean different digits.
>
>
>2.
>

>ABCD
>x  4
>----
>DCBA
>

>

2178*4=8712
>
>3.
>

> SEND
>+MORE
>-----
>MONEY               
>

>
>

I'll play with others in the evening, ok?
>Regards, Hilmar.