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Câu 1:
var i,n:integer;
s:longint;
begin
write('Nhap n = ');readln(n);
for i:=1 to n do
s:=s+(i*10+2);
write('S = ',s);
readln;
end.
Câu 2:
var i,n:integer;
s:real;
begin
write('Nhap n = ');readln(n);
for i:=1 to n do s:=s+1/n;
write('tong la ',s:10:2);
readln;
end.
Viết thân thôi hen
Var n,i,s:integer;
Read(n);
s:=0;
For i:=1 to n do
If i mod 2 <>0 then s:=s+i else s:=s-i;
Write(s);
end.
refer:
uses crt;
var s,i,n:integer;
begin
clrscr;
write('Nhap n='); readln(n);
s:=0;
for i:=0 to n do
if i mod 2=0 then s:=s+i;
writeln('S=',s);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
int main()
{
int n,i,t=0;
cin>>n;
for (int i=1; i<=3*n+1; i++)
if (i%2==1) t+=i;
else t-=i;
cout<<t;
}
Câu 6:
uses crt;
var n,i:integer;
begin
clrscr;
readln(n);
for i:=1 to n do
if n mod i=0 then write(i:4);
readln;
end.
5:
uses crt;
var n,i,dem:integer;
begin
clrscr;
readln(n);
dem:=0;
for i:=0 to n do
if i mod 2=1 then
begin
write(i:4);
dem:=dem+1;
end;
writeln;
writeln(dem);
readln;
end.
uses crt;
var s:real;
i,n:integer;
begin
clrscr;
readln(n);
s:=0;
for i:=1 to n do
s:=s+(n*(n+1))/((n+2)*(n+3));
writeln(s:4:2);
readln;
end.
Câu 1:
uses crt;
var a,s,p:real;
begin
clrscr;
repeat
write('Nhap do dai canh hinh vuong:'); readln(a);
until a>0;
p:=4*a;
s:=sqr(a);
writeln('Chu vi hinh vuong la: ',p:4:2);
writeln('Dien tich hinh vuong la: ',s);
readln;
end.
Câu 2:
uses crt;
var a,b,t,s,h:real;
begin
clrscr;
write('Nhap a='); readln(a);
write('Nhap b='); readln(b);
t:=a+b;
h:=a-b;
s:=a*b;
writeln('Tong la: ',t:4:2);
writeln('Hieu la: ',h:4:2);
writeln('Tich la: ',s:4:2);
readln;
end.
Câu 3:
uses crt;
var a,b,c:real;
begin
clrscr;
repeat
write('Nhap a='); readln(a);
write('Nhap b='); readln(b);
write('Nhap c='); readln(c);
until (a>0) and (b>0) and (c>0);
if (a+b>c) and (a+c>b) and (b+c>a) then writeln('Day la ba canh trong mot tam giac')
else writeln('Day khong la ba canh trong mot tam giac');
readln;
end.
uses crt;
var i,n,s:integer;
begin
clrscr;
readln(n);
s:=0;
i:=0;
while i<=n do
begin
i:=i+1;
s:=s+i*i;
end;
writeln(s);
readln;
end.
uses crt;
var s,i:integer;
begin
clrscr;
s:=0;
i:=2;
while i<=12 do
begin
s:=s+i;
i:=i+2;
end;
writeln(s);
readln;
end.