1)
Program Ok;
var i,a,sum:integer;
begin
sum:=0;
for i:=1 to 11 do
begin
read(a);
sum:=sum+a;
end;
write('Сумма = ', sum);
end.
2)
Program Ok;
var y,i,x,proiz:integer;
begin
proiz:=1;
for i:=5 to 18 do
begin
x:=i;
y:=3*sqr(x)-5*x+8;
Writeln(y);
proiz:=proiz*y;
end;
write('Произведение X = ', proiz);
end.
3) Program Ok;
var i,a,sum:integer;
begin
sum:=0;
for i:=1 to 11 do
begin
read(a);
if (a<=18) then<br>sum:=sum+a;
end;
write('Сумма = ', sum);
end.