n1= 25

n2= n1+1

n3= n1-1

n4=n1+2

n5=n1-2

#include<stdio.h>

int main(){

int n1,n2;

printf("\nEnter two numbers:");

scanf("%d %d",&n1,&n2);

while(n1!=n2){

if(n1>=n2)

n1=n1-n2;

else

n2=n2-n1;

}

printf("\nGCD=%d",n1);

return 0;

}

P(x=n1,y=n2) = (n!/n1!*n2!*(n-n1-n2)) * p1^n1*p2^n2*(1-p1-p2)

where n1,n2=0,1,2,....n n1+n2<=n

The N1 is a rocket.

#include<stdio.h>

int main(){

int n1,n2;

printf("\nEnter two numbers:");

scanf("%d %d",&n1,&n2);

while(n1!=n2){

if(n1>=n2-1)

n1=n1-n2;

else

n2=n2-n1;

}

printf("\nGCD=%d",n1);

return 0;

}