Question

S = 2¹ +2² +2³ + ... + 2^n Паскаль​

Answer 1

1. uses Math;
2. var
3.  S: real;
4.  N, i: byte;
5. begin
6.  Write('Введите N: ');
7.  Read(N);
8.  for i := 1 to N do
9.    S := S + Power(2.0, i);
10.  Writeln('S = ', S);
11. end.