Write an expression that evaluates to true if the integer variable x contains an even value, and false if it contains an odd value

Explanation:

I don't know what language you use, but mod is a common command in almost all of them. You could write it like this

for x = 1 to 10 do begin

 if x mod 2 = 0 then print x " is even."

 id x mod 2 = 1 then print x  " is odd."

end;