Question

please write the program
3​

Answer 1

Answer:

import java.util.*;

class Function{

int n;

int r;

double F;

Function(){

n=0;

r=0;

F=0.0;

}

public static void  main(String args[]){

Scanner in =new Scanner(System.in);

Function ob= new Function();

ob.readNum();

F= ob.factorial(n);/ ob.factorial(r); * ob.factorial(n-r);

ob.show();

}

void readNum(){

System.out.println("Enter the value of n");

n=in.nextInt();

System.out.println("Enter the value of r");

}

int factorial(int d){

int i,fact=1;

for(i=1;i<=d;i++){

fact= fact*i;

}

return fact;

}

void show(){

System.out.println("F="+F);

}

Explanation:

Above code is written in java using scanner class

hope it helps you!