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![](https://rs.olm.vn/images/avt/0.png?1311)
Var a:array[1..100] of integer;
i,s:integer;
Begin
For i:=1 to 100 do
Begin
Write('Nhap phan tu thu ',i,' = ');readln(a[i]);
If a[i] mod 2 <> 0 then s:=s+a[i];
End;
Write('Tong la ',s);
Readln;
End.
![](https://rs.olm.vn/images/avt/0.png?1311)
#include <bits/stdc++.h>
using namespace std;
long long a,b,i,dem,s;
int main()
{
cin>>a>>b;
dem=0;
s=0;
for (i=a; i<=b; i++)
if (i%2==0)
{
dem++;
s=s+i;
}
cout<<dem<<" "<<s;
return 0;
}
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a:array[1..100]of integer;
i,n,k,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
write('Nhap k='); readln(k);
t:=0;
for i:=1 to n do
if a[i] mod k=0 then t:=t+a[i];
writeln(t);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
#include <bits/stdc++.h>
using namespace std;
long long a,b,i,dem,s;
int main()
{
cin>>a>>b;
dem=0;
s=0;
for (i=a; i<=b; i++)
if (i%2==0)
{
dem++;
s=s+i;
}
cout<<dem<<" "<<s;
return 0;
}
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 1:
#include <bits/stdc++.h>
using namespace std;
long long i,n,x,t;
int main()
{
cin>>n;
t=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x%15==0) t=t+x;
}
cout<<t;
return 0;
}
![](https://rs.olm.vn/images/avt/0.png?1311)
#include <bits/stdc++.h>
using namespace std;
long long a,b,i,dem,s;
int main()
{
cin>>a>>b;
dem=0;
s=0;
for (i=a; i<=b; i++)
if (i%2==0)
{
dem++;
s=s+i;
}
cout<<dem<<" "<<s;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long s,i;
int main()
{
s=0;
for (i=1; i<=100; i++)
if (i%2==1) s=s+i*i;
cout<<s;
return 0;
}