Newbie Question on Update

[Joseph Kraer]

I am trying to update a couple of rows in a table by doing the
following:

update table
set column5 = number1
where column 1 = number2
and column1 = number3

but it is not working.  I tried listing the conditions separated by
commas (where column 1 = number2, column1 = number3) and also didn't
work.  What am I doing wrong?

Thanks in advance,

Joseph "Tito" Kraer
Business Systems Analyst
Taylor, Bean & Whitaker Mortgage Corp