5.
Проверка:
javascript:var x=5,y=25;while(x!=y){if(x>y)x-=y;else y-=x;}alert(x);
1) 34(16) = 3*16+4 = 52(10)
34(16) = 11 0100(2)
2) 11110101(2) = 1111 0101(2) = F5(16)
11110101(2) = 11 110 101(2) = 365(8)
11110101(2) = 2^7+2^6+2^5+2^4+2^2+2^0 = 128+64+32+16+4+1 = 245(10)
Var b,s:real;
begin
S := 3;
b := 0;
repeat
b := 2 + s + b;
s := s + 4;
until s=99;
writeln(b);
end.