1: //Question4.java 2: 3: public class Question4 4: { 5: public static void main(String[] args) 6: { 7: System.out.println(mysteryValue(3)); 8: } 9: 10: public static int mysteryValue 11: ( 12: int n 13: ) 14: { 15: if (n <= 1) 16: return 1; 17: else 18: return (mysteryValue(n - 1) + n); 19: } 20: }