uses crt;

var i,n,t:integer;

begin

clrscr;

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

t:=0;

for i:=1 to 2*n do 

 if i mod 2=1 then t:=t+sqr(i);

writeln(t);

readln;

end.

Program HOC24;

var n,i: integer;

t: longint;

Begin

write('Nhap N: '); readln(N);

t:=0;

for i:=1 to n do t:=t+i;

if t mod 2=0 then write('Tong la so chan') else write('Tong la so le');

readln

end.

n = int(input('nhap n'))

s = 0

for i in range(0,n):

     s = s+i

print('tong cua day tu 0 den '+n+'la'+s)

if s%2 == 0:

     print('s la so chan')

else:

     print('s la so le')

1:

uses crt;

var n,i,t:integer;

begin

clrscr;

readln(n);

t:=0;

for i:=1 to n do

t:=t+i*i;

write(t);

readln;

end.

2

program bt2;

var i,n,t:integer;

begin

readln(n);

s:=0;

for i:=1 to n do

if i mod 2 = 1 then s:=s+i;

readln;

end.

uses crt;

var n,i,t:integer;

begin

clrscr;

readln(n);

t:=0;

for i:=1 to n do 

  t:=t+2*i-1;

writeln(t);

readln;

end.

Uses crt;

Var i,t,n:integer;

Begin

Clrscr;

Write('n='); readln(n);

T:=0;

For i:=1 to 2*n do

If i mod 2=1 then t:=t+i;

Writeln(t);

Readln;

End.

Giải giúp mk với mai mk thể rồi mk cảm ơn nhiều

Uses crt;

Var i,t,n:integer;

Begin

Clrscr;

Write('n='); readln(n);

T:=0;

For i:=1 to 2*n do

If i mod 2=1 then t:=t+i;

Writeln(t);

Readln;

End.

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.