diff --git a/content/GA_2_4/GA_2_4_solution.ipynb b/content/GA_2_4/GA_2_4_solution.ipynb
index 03703aaa413f06158a8b7cf2276f5578dcde5135..c2d10fccbd70ed0b37dedba6f5faccc4bac39f3b 100644
--- a/content/GA_2_4/GA_2_4_solution.ipynb
+++ b/content/GA_2_4/GA_2_4_solution.ipynb
@@ -35,7 +35,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 49,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -72,7 +72,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 50,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [
     {
@@ -176,7 +176,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 51,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -332,7 +332,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 52,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [
     {
@@ -348,7 +348,7 @@
        "np.float64(0.013157894736842105)"
       ]
      },
-     "execution_count": 52,
+     "execution_count": 4,
      "metadata": {},
      "output_type": "execute_result"
     },
@@ -455,7 +455,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 53,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [
     {
@@ -645,7 +645,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 54,
+   "execution_count": 6,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -806,7 +806,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 55,
+   "execution_count": 7,
    "metadata": {},
    "outputs": [
     {
@@ -900,7 +900,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [
     {
@@ -1039,7 +1039,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 57,
+   "execution_count": 9,
    "metadata": {},
    "outputs": [
     {
@@ -1076,7 +1076,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 58,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [
     {
@@ -1201,7 +1201,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 59,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [
     {
@@ -1308,7 +1308,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 60,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [
     {