Câu 1:

Program HOC24;

var i,p: integer;

t: longint;

begin

write('Nhap P: '); readln(p);

t:=0;

for i:=1 to p do if i mod 2<>0 then t:=t+i;

write('Tong cac so le la: ',t);

readln

end.

Câu 2:

Program HOC24;

var i,n: integer;

t: longint;

begin

write('Nhap N: '); readln(n);

t:=0;

for i:=1 to n do if i mod 2=0 then t:=t+i;

write('Tong cac so chan la: ',t);

readln

end.

Câu 3:

Program HOC24;

var i,t,n: integer;

begin

write('Nhap N: '); readln(n);

t:=0;

for i:=1 to n do if n mod i=0 then t:=t+i;

write('Tong cac uoc cua ',n,' la: ',t);

readln

end.

program TimBoi4ChuSo;
var
  n, i: integer;
begin
  repeat
    writeln('Nhap vao so nguyen n (2<n<100): ');
    readln(n);
  until (n > 2) and (n < 100);
  
  writeln('Cac boi cua ', n, ' co 4 chu so la: ');
  for i := 1000 to 9999 do
  begin
    if i mod n = 0 then
      writeln(i);
  end;
end.

Câu 1: 

program chieu_cao;

uses crt;

var Nam, Linh: real;

begin

clrscr;

write ('Nhap chieu cao cua Nam:'); readln (Nam);

write ('Nhap chieu cao cua Linh:'); readln (Trang);

if Nam > Linh then writeln ('Ban Nam cao hon');

if Nam < Linh then writeln ('Ban Linh cao hon') else writeln ('Hai ban cao bang nhau');

readln

end.

Câu 2: 

program Tich;

var N,i: interger;

      P: longint;

begin

write ('N='); readln (N);

P:=1;

for i:=1 to N do P:=P*i;

writeln (N,' ! = ',P);

readln

end.

Câu 3: 

uses crt;

var n,i,s:longint;

begin

clrscr;

readln(n);

for i:=1 to 10 do 

  writeln(n,'*',i,'=',n*i);

readln;

end.

Câu 3:

Var i,n:integer:

Begin

Write('n = ');readln(n);

Write('Cac uoc cua n la ');

For i:=1 to n do

If n mod i = 0 then write(i:8);

Readln

End.

Câu 4

Var i,n:integer:

Begin

Write('n = ');readln(n);

Write('Cac so le nho hon n la ');

For i:=1 to n - 1 do

If i mod 2 <> 0 then write(i:8);

Readln

End.

1. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do write(i:3);

readln;

end.

2. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do if(i mod 2 = 0) then write(i:3);

readln;

end.

1. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do write(i:3);

readln;

end.

2. Uses crt;

var n,i: integer;

begin clrscr;

readln(n);

for i:=1 to n do if(i mod 2 = 0) then write(i:3);

readln;

end.

1.

program InDaySoTuNhien;
var n, i: integer;
begin
   write('Nhap so nguyen duong n: ');
   readln(n);

   writeln('Day so tu 1 den ', n, ' la:');
   for i := 1 to n do
      write(i, ' ');
end.

2.

program InSoChan;
var
   n, i: integer;
begin
   write('Nhap so nguyen n: ');
   readln(n);

   writeln('Cac so nguyen chan trong khoang tu 1 den ', n, ' la:');
   for i := 1 to n do
   begin
      if i mod 2 = 0 then
         write(i, ' ');
   end;
end.

Program HOC24;

var i,n: integer;

s: longint;

begin

write('Nhap n : '); readln(n);

s:=0;

for i:=1 to n do if i mod 2=0 then s:=s+i;

write('S = ',s);

readln

end.

pascal

program sum_of_evens;

var
  i, n, sum: integer;

begin
  write('Enter a positive integer: ');
  readln(n);
  
  sum := 0;
  
  for i := 2 to n step 2 do
  begin
    sum := sum + i;
  end;
  
  writeln('The sum of even numbers from 2 to ', n, ' is ', sum);
end.

program MultiplesOfN;
var
  n, i: integer;
begin
  repeat
    write('Nhap vao so nguyen duong n (0<n<100): ');
    readln(n);
  until (n > 0) and (n < 100);

  writeln('Cac boi so cua ', n, ' co 4 chu so la:');

  for i := 1000 to 9999 do
  begin
    if (i mod n = 0) then
    begin
      writeln(i);
    end;
  end;

  readln;
end.

Tham khảo:

program tim_uoc;
uses crt;
var n,i:integer;
begin
clrscr;
write('Nhap n: ');readln(n);
if (n<0) then 
begin
writeln('So nhap vao khong thoa man.');
write('Nhap lai n: ');readln(n);
end;
writeln('Cac uoc so cua ',n,' tu 1 den ',n,' la: ');
for i:=1 to n do
if ( (n mod i) = 0 ) then write(i,'  ');
readln;
end.