#include< stdio.h >
#include< conio.h >
void main()
{
int n,r,npr;
int fact (int num);
clrscr();
printf("Enter the values of n and r:");
scanf("\t%d\t %d",&n,&r);
npr=fact(n)/fact(n-r);
printf("nPr=%d",npr);
getch();
}
int fact (int num)
{
int i,a=1;
for(i=1;i<=num;i++)
{
a=a*i;
}
return a;
}
OUTPUT :
Enter the values of n and r:3 2
nPr =6
#include< conio.h >
void main()
{
int n,r,npr;
int fact (int num);
clrscr();
printf("Enter the values of n and r:");
scanf("\t%d\t %d",&n,&r);
npr=fact(n)/fact(n-r);
printf("nPr=%d",npr);
getch();
}
int fact (int num)
{
int i,a=1;
for(i=1;i<=num;i++)
{
a=a*i;
}
return a;
}
OUTPUT :
Enter the values of n and r:3 2
nPr =6
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