program TinhTongGiaiThua;

uses crt;

var

     n, num, sum, digitCount: integer;

function GiaiThua(x: integer): integer;

var

     i, fact: integer;

begin

     fact := 1;

     for i := 1 to x do

     begin

          fact := fact * i;

     end;

     GiaiThua := fact;

end;

begin

     clrscr;

     write('Nhap so n: ');

     readln(n);

     sum := 0;

     digitCount := 0;

     while n > 0 do

     begin

          num := n mod 10;

          sum := sum + GiaiThua(num);

          digitCount := digitCount + 1;

          n := n div 10;

     end;

     writeln('Tong giai thua cac chu so cua n la: ', sum);

     writeln('Tong so chu so cua n la: ', digitCount);

     readln;

end.

uses crt;

var a,b,c:integer;

begin

clrscr;

for a:=1 to 9 do 

for b:=0 to 9 do 

for c:=0 to 9 do 

if (a+b+c=a*b*c) then writeln(a,b,c,' ');

readln;

end.

Tổng 3 chữ số của số bé nhất có 3 chữ số có tích 3 chữ số bằng 3 là ? 

uses crt;

var n:string;

i,ln,nn,t,s,x,y:integer;

begin

clrscr;

readln(n);

writeln(length(n));

ln:=0;

nn:=9;

for i:=1 to length(n) do 

begin

val(n[i],x,y);

if ln<x then ln:=x;

if nn>x then nn:=x;

end;

writeln(ln);

writeln(nn);

t:=0;

s:=1;

for i:=1 to length(n) do 

begin

val(n[i],x,y);

t:=t+x;

s:=s*x;

end;

writeln(t);

writeln(s);

readln;

end.

uses crt;

var n,i,d,dem,kt,t,kt1,t1,t2,t3,max,min,x,j:integer;   

a,b:array[1..100]of integer;   

st:string;

begin

clrscr;

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

str(n,st);

d:=length(st);

for i:=1 to d do 

val(st[i],a[i],x);

dem:=1;

b[1]:=a[1];

for i:=1 to d do 

begin     

kt:=0;     

for j:=1 to dem do       

if a[i]=b[j] then kt:=1;     

if kt=0 then       

begin           

inc(dem);           

b[dem]:=a[i];       

end; 

end;

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

for i:=1 to dem do 

write(b[i]:4);

writeln;

t:=0;

for i:=1 to d do 

t:=t+a[i];

writeln('Tong cac chu so cua ',n,' la: ',t);

kt1:=0;

for i:=2 to trunc(sqrt(t)) do 

if t mod i=0 then     

begin       

kt1:=1;       

break;     

end;

if (kt1=0) and (t>1) then writeln(t,' la so nguyen to')

else writeln(t,' khong la so nguyen to');

writeln('Cac chu so o vi tri le cua ',n,' la: ');

t1:=0;

for i:=1 to d do 

if i mod 2=1 then     

begin       

write(a[i]:4);       

t1:=t1+a[i];     

end;

writeln;

writeln('Tong cac chu so o vi tri le la: ',t1);

if trunc(sqrt(t1))=sqrt(t1) then writeln(t1,' la so chinh phuong')

else writeln(t1,' khong la so chinh phuong');

writeln('Cac chu so o vi tri chan cua ',n,' la: ');

t2:=0;

for i:=1 to d do 

if i mod 2=0 then     

begin       

write(a[i]:4);       

t2:=t2+a[i];     

end;

writeln('Tong cac chu so o vi tri chan la: ',t2);

t3:=0;

for i:=1 to t2 do 

if t2 mod i=0 then t3:=t3+i;

if (t3=t2) and (t2>0) then writeln(t2,' la so hoan hao')

else writeln(t2,' khong la so hoan hao');

max:=a[1];

min:=a[1];

for i:=1 to d do 

begin     

if max<a[i] then max:=a[i];     

if min>a[i] then min:=a[i]; 

end;

writeln('Chu so lon nhat cua ',n,' la: ',max);

writeln('Chu so nho nhat cua ',n,' la: ',min);

writeln('Tong cua chung la: ',max+min);

readln;

end.

Câu 1: 

#include <bits/stdc++.h>

using namespace std;

long long n;

int main()

{

cin>>n;

int t=0;

while (n>0)

{

int x=n%10;

t=t+x;

n=n/10;

}

cout<<t;

return 0;

}

Câu 1: 

uses crt;

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

i,n,t,s:integer;

begin

clrscr;

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

for i:=1 to n do 

  begin

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

end;

t:=0;

s:=1;

dem:=0;

for i:=1 to n do 

  if a[i] mod 3=0 then 

begin

inc(dem);

t:=t+a[i];

s:=s*a[i];

end;

if dem=0 then writeln('Khong co so chia het cho 3 trong day')

else begin

writeln('Tong cac so chia het cho 3 la: ',t);

writeln('Tich cac so chia het cho 3 la: ',s);

end;

readln;

end.

Câu 2: 

uses crt;

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

i,n,dem,t: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] mod 2=0 then 

begin

inc(dem);

t:=t+a[i];

end;

writeln('So so chan la: ',dem);

writeln('Tong cac so chan la: ',t);

readln;

end.

Câu 3: 

uses crt;

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

i,n,dem1,dem2,t1,t2,s1,s2:integer;

begin

clrscr;

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

for i:=1 to n do 

  begin

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

end;

dem1:=0;

dem2:=0;

t1:=0;

t2:=0;

s1:=1;

s2:=1;

for i:=1 to n do

begin

if a[i] mod 2=0 then 

begin

inc(dem1);

t1:=t1+a[i];

s1:=s1*a[i];

end

else begin

inc(dem2);

t2:=t2+a[i];

s2:=s2*a[i];

end;

end;

if dem1=0 then writeln('Khong co so chan trong day')

else begin

writeln('So so chan la: ',dem1);

writeln('Tong cac so chan la: ',t1);

writeln('Tich cac so chan la: ',s1);

end;

if dem2=0 then writeln('Khong co so le trong day')

else begin

writeln('So so le la: ',dem2);

writeln('Tong cac so le la: ',t2);

writeln('Tich cac so le la: ',s2);

end;

readln;

end.

tin hả