#include <iostream>
#include <math.h>
using namespace std;
int main()
{
double a,b,k=1, count=0;float q;
cout<< "Enter A ";
cin>>a;
cout << "Enter B ";
cin>>b;
for (int i=a; i<=b;i++){
k*=i;
count++;
}
cout << "Sum = " << k << "!\n";
cout << "Count = " << count << "!\n";
cout << "Avarage = " << pow(k, 1/count) << "!\n";
}
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