1:

uses crt;

var t,x,i,n:integer;

begin

clrscr;

t:=0;

n:=10;

for i:=1 to n do

begin

readln(x);

t:=t+x;

end;

write(t);

readln;

end.

2: 

uses crt;

var dem,x,i,n:integer;

begin

clrscr;

dem:=0;

n:=10;

for i:=1 to n do

begin

readln(x);

if x mod 2=0 then inc(dem);

end;

write(dem);

readln;

end.

3

program Cacsole;
uses crt;
var M, N, i: integer;
begin
clrscr;
write ('Nhap M= '); readln(M);
write ('Nhap N= '); readln(N);
for i := M to N do

if  i mod 2 = 1 then
write (i,' ');
readln;
end.

program TinhTongSo;
uses crt;
var
  a: array [1..10] of integer;
  i, tong, dem: integer;
begin
  clrscr;
  writeln('Nhap day 10 so nguyen: ');
  for i := 1 to 10 do
  begin
    write('Nhap so thu ', i, ': ');
    readln(a[i]);
  end;
  writeln('Day so da nhap tren mot hang: ');
  for i := 1 to 10 do
    write(a[i], ' ');
  tong := 0;
  for i := 1 to 10 do
    if a[i] < 0 then
      tong := tong + a[i];
  writeln('Tong cac so nguyen am: ', tong);
  dem := 0;
  for i := 1 to 10 do
    if (a[i] > 6) and (a[i] < 9) then
      dem := dem + 1;
  writeln('So luong cac so thoa dieu kien "lon hon 6 va nho hon 9": ', dem);
  readln;
end.

#include <bits/stdc++.h>

using namespace std;

double a[1000];

int i,n;

int main()

{

cin>>n;

for (i=1; i<=n; i++) cin>>a[i];

for (i=n; i>=1; i--)

if (a[i]>0)

{

cout<<i<<" ";

return 0;

}

cout<<"Khong co so am trong day";

return 0;

}

uses crt;

var a:array[1..100]of integer;

i,n:integer;

begin

clrscr;

write('n='); readln(n);

for i:=1 to n do 

 begin

write('A[',i,']='); readln(a[i]);

end;

for i:=1 to n do 

  if a[i]<0 then write(a[i]:4);

readln;

end.

#include <bits/stdc++.h>

using namespace std;

long long a[15],i,n=15,s,t;

int main()

{

for (i=1; i<=n; i++) cin>>a[i];

s=1;

for (i=1; i<=n; i++)

if (a[i]%2==0)

{

cout<<a[i]<<" ";

s*=a[i];

}

cout<<endl;

cout<<"Tich cac so chan la: "<<s<<endl;

t=0;

for (i=1; i<=n; i++)

if (a[i]<0) t=t+a[i]*a[i];

cout<<t;

return 0;

}

Bài 1:

#include <bits/stdc++.h>

using namespace std;

long long x,n,i,t;

int main()

{

cin>>n;

t=0;

for (i=1; i<=n; i++)

{

cin>>x;

if ((x<0) and (x%2!=0)) t=t+x;

}

cout<<t;

return 0;

}

6:

#include <bits/stdc++.h>

using namespace std;

int main()

{

int n,A[100],i,dem=0;

cin>>n;

for (int i=1; i<=n; i++) cin>>A[i];

for (int i=1;i<=n; i++)

if (A[i]%2!=0) dem++;

cout<<dem;

return 0;

}

5:

#include <bits/stdc++.h>

using namespace std;

int main()

{

long long n,nn=1e6,A[1000];

cin>>n;

for (int i=1; i<=n; i++) cin>>A[i];

for (int i=1; i<=n; i++)

nn=min(nn,A[i]);

for (int i=1; i<=n; i++)

if (nn==A[i]) cout<<i<<" ";

return 0;

}

Câu 1: 

uses crt;

var a:array[1..100]of integer;

i,n:integer;

begin

clrscr;

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

for i:=1 to n do 

 begin

write('A[',i,']='); readln(a[i]);

end;

for i:=1 to n do 

  if a[i]<0 then write(a[i]:4);

readln;

end.

Câu 2: 

uses crt;

var a:array[1..100]of integer;

i,n:integer;

begin

clrscr;

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

for i:=1 to n do 

 begin

write('A[',i,']='); readln(a[i]);

end;

for i:=1 to n do 

  if a[i]>0 then write(a[i]:4);

readln;

end.

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.