The Brooklyn College PACS, LLC x Ogbonnayajrakpara, LLC

1) gcd(x,y): greatest common divisor or denominator

int gcd(int x, int y) {
   
        if(y==0)
            return x;
   
    return gcd(y, x%y);
   
}


2) factorial(n)

int factorial(int n) {
    if(n==0)
        return 1;
   
    return n * factorial(n-1);
}


3) lcm(x,y): lowest common multiple or multiplier

int lcm(int x, int y) {
    return (x*y)/gcd(x,y);
}