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![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a:array[1..100]of integer;
i,n,dem,t,tb:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
dem:=0;
t:=0;
for i:=1 to n do
if a[i]>0 then
begin
dem:=dem+1;
t:=t+a[i];
end;
writeln('So luong phan tu duong la: ',dem);
writeln('Tong cac phan tu duong la: ',t);
writeln('Trung binh cac phan tu duong la: ',t/dem:4:2);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a:array[1..200]of integer;
n,i,k,t,t1: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 2<>0 then t:=t+a[i];
t1:=0;
for i:=1 to n do
if a[i] mod k=0 then t1:=t1+a[i];
writeln('Tong cac phan tu le la: ',t);
writeln('Tong cac phan tu la boi cua ',k,' la: ',t1);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a:array[1..10]of longint;
n,i,t,dem,dem1,dem2,t1:integer;
begin
clrscr;
readln(n);
for i:=1 to n do readln(a[i]);
for i:=1 to n do write(a[i]:4);
writeln;
t:=0;
for i:=1 to n do t:=t+a[i];
writeln(t);
t1:=0;
dem1:=0;
dem2:=0;
for i:=1 to n do
begin
if a[i]>0 then dem1:=dem+1;
if a[i] mod 2=0 then
begin
dem2:=dem2+1;
t1:=t1+a[i];
end;
end;
writeln(dem1);
writeln(t1/dem2:4:2);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a:array[1..10]of longint;
n,i,t,dem,dem1,dem2,t1:integer;
begin
clrscr;
readln(n);
for i:=1 to n do readln(a[i]);
for i:=1 to n do write(a[i]:4);
writeln;
t:=0;
for i:=1 to n do t:=t+a[i];
writeln(t);
t1:=0;
dem1:=0;
dem2:=0;
for i:=1 to n do
begin
if a[i]>0 then dem1:=dem+1;
if a[i] mod 2=0 then
begin
dem2:=dem2+1;
t1:=t1+a[i];
end;
end;
writeln(dem1);
writeln(t1/dem2:4:2);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
#include <bits/stdc++.h>
using namespace std;
long long n,i,a[10000];
int main()
{
cin>>n;
for (i=1; i<=n; i++)
cin>>a[i];
for (i=1; i<=n; i++) cout<<a[i]<<" ";
return 0;
}
![](https://rs.olm.vn/images/avt/0.png?1311)
uses crt;
var a:array[1..100]of integer;
n,i,k,dem,dem1: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);
dem:=0;
dem1:=0;
for i:=1 to n do
begin
if a[i] mod 2=0 then inc(dem);
if a[i] mod k=0 then inc(dem1);
end;
writeln('So phan tu chan la: ',dem);
writeln('So phan tu chia het cho ',k,' la: ',dem1);
readln;
end.
![](https://rs.olm.vn/images/avt/0.png?1311)
#include <bits/stdc++.h>
using namespace std;
long long a[100],n,i,t,t1,dem,dem1;
//chuongtrinhcon
bool ktnt(long long x)
{
if (x<=1) return(false);
for (int i=2; i*i<=x; i++)
if (x%i==0) return(false);
return true;
}
//chuongtrinhchinh
int main()
{
cin>>n;
for (i=1; i<=n; i++)
{
cin>>a[i];
}
for (i=1; i<=n; i++) cout<<a[i]<<" ";
cout<<endl;
t=0;
for (i=1; i<=n; i++) if (a[i]%2==0) t=t+a[i];
cout<<t<<endl;
dem=0;
for (i=1; i<=n; i++) if (a[i]%3==0) dem++;
cout<<dem<<" ";
t1=0;
dem1=0;
for (i=1; i<=n; i++)
if (a[i]%2!=0)
{
t1+=a[i];
dem1++;
}
cout<<fixed<<setprecision(2)<<(t1*1.0)/(dem1*1.0)<<endl;
for (i=1; i<=n; i++)
if (ktnt(a[i])==true) cout<<a[i]<<" ";
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long x,i,n,t1,dem,t;
int main()
{
cin>>n;
dem=0;
t=0;
t1=0;
for (i=1; i<=n; i++)
{
cin>>x;
t+=x;
if (x>0)
{
dem++;
t1+=x;
}
}
cout<<"So phan tu duong la: "<<dem<<endl;
cout<<"Tong cac so duong la: "<<t1<<endl;
cout<<"Trung binh cong cua day la: "<<fixed<<setprecision(2)<<(t*1.0)/(n*1.0)<<endl;
cout<<"Trung binh cac so duong la: "<<fixed<<setprecision(2)<<(t1*1.0)/(dem*1.0);
return 0;
}