Code import java.util.Arrays;import java.util.Comparator; public class Lottery{ long perm(long a, long b) { long num = 1; for (int i = 0; i < b; i++) num *= a--; return num; } long fact(long a) { long num = 1; for (int i = 2; i <= a; i++) num *= i; return num; } long cbn(long n, long r) { if(r &