diff --git a/ch_01/Exercise01_04.java b/ch_01/Exercise01_04.java
index 8ab9c6e..c2aacb9 100644
--- a/ch_01/Exercise01_04.java
+++ b/ch_01/Exercise01_04.java
@@ -11,47 +11,10 @@
 public class Exercise01_04 {
 
     public static void main(String[] args) {
-        int a = 2;
-        int b = 3;
-        int c = 4;
-
-        for (int i = 0; i < 5; i++) {
-            if (i > 0) {
-                System.out.print("\n");
-            }
-            for (int j = 0; j < 3; j++) {
-
-                if (i == 0) {
-                    if (j == 0)
-                        System.out.print("a ");
-                    if (j == 1)
-                        System.out.print("a^2 ");
-                    if (j == 2)
-                        System.out.print("a^3");
-
-                } else if (i == 1) {
-                    System.out.print("1 ");
-                } else if (i == 2) {
-                    System.out.print(a + " ");
-                    a *= 2;
-
-                } else if (i == 3) {
-                    System.out.print(b + " ");
-                    b *= 3;
-
-                } else {
-                    System.out.print(c + " ");
-                    c *= 4;
-
-                }
-
-
-            }
-
-
+        int num = 4;
+        for (int row = 1; row <= num; row++) {
+            System.out.println(row + " " + row * row + " " + row * row * row);
         }
-
     }
 
-
 }
diff --git a/ch_07/Exercise07_05.java b/ch_07/Exercise07_05.java
deleted file mode 100644
index 68c80ff..0000000
--- a/ch_07/Exercise07_05.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package ch_07;
-
-import java.util.Scanner;
-
-/**
- * 7.5 (Print distinct numbers) Write a program that reads in ten numbers and
- * displays the number of distinct numbers and the distinct numbers in their
- * input order and separated by exactly one space (i.e., if a number appears
- * multiple times, it is displayed only once). (Hint: Read a number and store
- * it to an array if it is new. If the number is already in the array, ignore it.)
- * After the input, the array contains the distinct numbers.
- */
-public class Exercise07_05 {
-    public static void main(String[] args) {
-        Scanner input = new Scanner(System.in);
-        int[] nums = new int[10];
-
-        int checkNum = 0;
-        int counter = 0;
-
-        System.out.print("Enter ten integers seperated by spaces: ");
-
-        for (int i = 0; i < 10; i++) {
-            checkNum = input.nextInt();
-            if (specialNum(nums, checkNum)) {
-                nums[counter] = checkNum;
-                counter++;
-            }
-        }
-
-        System.out.println("The count of distinct numbers are " + counter);
-        System.out.print("The distinct numbers are");
-
-        for (int i = 0; i < nums.length; i++) {
-            if (nums[i] != 0)
-                System.out.print(" " + nums[i]);
-        }
-        System.out.println();
-    }
-
-    public static boolean specialNum(int[] a, int number) {
-        for (int i = 0; i < a.length; i++) {
-            if (a[i] == number)
-                return false;
-        }
-        return true;
-    }
-}
\ No newline at end of file