According to this table:
When all the control bits are set to 1, the output is 1.
If I look at the table:
x=0 because zx is set
x=1 because nx is set
y=0 because zy is set
y=1 because ny is set
out=1+1 => out=1 OR 1 => out=1 because f is set
out=!1 => out=0 because no is set
But why does the second line say that out=1 when all 6 control bits are set then? What am I missing?