1)
var
i, n, c, b, af, bf, a: integer;
begin
af := 0;
bf := 0;
c := 0;
write('Введите число:');
readln(n);
writeln('Введите A,B:');
readln(a, b);
while n > 0 do
begin
if((n mod 10) mod 2 = 0) then c := c + 1;
if(n mod 10 = a) then af := af + 1;
if(n mod 10 = b) then bf := bf + 1;
n := n div 10;
end;
writeln('Количество четных цифр: ', c);
if(af > 0) and (bf > 0) then write('Да')
else write('Нет');
end.
2)
var
i: integer;
begin
for i := 1000 to 9999 do
if((i mod 10) = (i div 1000)) and ((i mod 100 div 10) = (i div 100 mod 10))
then write(i, ' ');
end;
end.
3)
var
n, c, a, b, i: longint;
begin
readln(a);
n := a;
b := a;
while n > 0 do
begin
c := c + 1;
n := n div 10;
end;
for i := 1 to c do
b := b * 10;
a := a + b;
write(a);
end.